The Crypto Enthusiast's Guide to
Operational Security (OpSec) & Open-Source Intelligence (OSINT)

Introduction

Why OpSec & OSINT Matters in Crypto

If you are into cryptocurrencies you need to be aware that there are many traps and scams waiting for you. In 2026 we are talking about billions of dollars in crypto-assets traded, staked and held, mostly on public blockchains like Bitcoin and Ethereum. So it is not a surprise that hackers and scammers, as well as the beloved governments, are circling. In 2024 alone there were more than $3 billion lost due to crypto hacks, phishing scams and rug pulls, according to our ‘friends’ from Chainalysis. A single mistake can mean drastical financial damage, which is why Operational Security (OpSec) is so important for people who participate in this market. You can view OpSec, methods that protect your identity, funds and transactions from prying eyes, as your shield. This guide will teach you how to use it; with a specific focus on crypto-related components, giving you not just knowledge but actionable tips and tricks for different techniques and tools.

OSINT, the practice of collecting and analyzing public data, is important in order to vet new projects, companies or individuals, for example founders and employees, in order to avoid falling for scams and other grifts. This guide will teach you, besides OpSec, also about OSINT, with a specific focus on crypto-related components, giving you not just knowledge but actionable tips and tricks for different techniques and tools.

Who This Guide is For

My guide is for anyone that is active in the crypto-market, no matter if you are a daytrader, a hodler, DeFi degen, developer, or a straight privacy advocate; no matter how much funds you are holding; all of you need OSINT, many are not aware of this simple fact.

Operational Security (OpSec) for Crypto Enthusiasts

To survive the Wild West of the 21 century which we call ‘Crypto’, a thriving high-stakes market that operates without acknowledging borders or timezones, you need advanced knowledge regarding OpSec. It does not matter if you are a small-scale investor with some hundred bucks in your wallets, a whale, a developer building new protocols, a DeFi degen that is yield farming across different protocols,... no one can escape the task to learn about it. No one. OpSec is your first line of defense against hackers, scammers and even governments; you should take it seriously. This chapter will teach you about the groundwork, its role, unique risks in crypto, the right mindset and the right tools to use.

Chapter 1: Foundations of Crypto OpSec

1.1 Understanding OpSec in a Crypto Context

Defining OpSec

Operational Security, or short ‘OpSec’, is the discipline of protecting personal and / or sensitive information as well as assets by identifying risks, controlling and mitigating them. When it comes to OpSec in crypto, there are three critical elements:

• Your Identity: If you want to be 100% sure to not encounter

certain scenarios, like a criminal monitoring your crypto activities and tying it to your identity, you have to be on the watch and keep your real-life identity (name, address, phone number,...) separate from your crypto activities.

• Your Funds: It is of utmost importance that you are always

securing your private keys. Not your keys, not your coins; literally.

• Your Transactions: In order to protect your financial privacy

in pseudonymous ecosystems you have to minimize the traceability of your blockchain activity with privacy-enhancing solutions. It is pure pragmatism, not paranoia. A famous saying, I do not know where it originally came from, goes: ‘Just because you are paranoid, that does not mean that they are not after you.’ A single mistake can lead to catastrophic losses, but 99% of the time could have been avoided. In 2024, $3.7 billion was stolen in crypto hacks, and in the majority of the cases poor OpSec was responsible.

Why Crypto’s Transparency Demands Robust OpSec

As already mentioned, most blockchains, Bitcoin, Ethereum, Solana, Avalanche,... are all public by design, offering no privacy. Anyone with access to the internet can look-up your addresses via blockchain explorers; while this offers trustlessness and decentralization, as transactions can be verified without intermediaries, it exposes your whole on-chain activity, making it all visible to hackers, blockchain analysis companies, tax authorities and governments. If you send Bitcoin from your personal self-custody wallet to a KYC’d exchange such as Binance or Coinbase, companies like Chainalysis can tie that wallet to your real-world identity. That is why a robust OpSec is needed:

• Avoid linking wallets to personal details, obscure your

identity whenever possible

• Store your keys offline and use secure transaction methods
• Break transaction links via CoinJoin or cross-chain swaps

Without OpSec, you will need to be very lucky to not become the victim of theft. This transparency demands robust OpSec to:

Obscure Your Identity: Use pseudonymous wallets and avoid linking them to personal details. Protect Your Funds: Store keys offline and use secure transaction methods. Minimize Traceability: Break transaction links with techniques like CoinJoin or cross-chain swaps (covered in Chapter 2) Important to mention at this point, good OpSec will never make you invisible; just a harder target.

1.2 Threat Modeling for Crypto Users

Identifying Your Risks

Identifying specific risks to your crypto-assets and your personal data is called ‘threat modeling’, followed by prioritizing defense methods according to your personal risk profile, as not every cryptocurrency user is facing the same threats. A small fish with $1K in crypto has different risks than a whale holding 7-figs, or even having this as his daytrading balance on a centralized

exchange (CEX), or a developer who is managing the smart contracts of a widely used protocol. Here’s how risks vary by crypto user type: Retail Investors (e.g., holding $100-$10,000): Main Threats: Phishing scams, fake wallet apps, and social engineering (e.g., fake X giveaways promising free crypto). Why: Small balances are less likely to attract sophisticated hackers but are prime targets for mass phishing campaigns. Key OpSec Needs: Secure wallet setup, strong passwords, and scam awareness. Whales (e.g., holding $100,000+):

Main Threats: Targeted hacking (e.g., spear phishing, SIM-swapping), chain analysis linking wallets to identities, and physical threats (e.g., kidnapping for key access). Why: Large balances make you a high-value target for advanced persistent threats (APTs). Key OpSec Needs: Hardware wallets, multi-sig setups, and transaction privacy techniques. Developers (e.g., building dApps or smart contracts): Main Threats: Code vulnerabilities, doxxing via GitHub leaks, and social engineering targeting project funds. Why: Developers often control significant assets (e.g., protocol treasuries) and are visible in public repos or communities. Key OpSec Needs: Secure development environments, pseudonymous online personas, and team-wide OpSec protocols; especially for the Discord moderators nowadays.

How to Build Your Threat Model

Assess Your Assets: List your crypto holdings (e.g., 2 BTC, 10 ETH, $5,000 in USDT) and their storage (e.g., MetaMask, Ledger, exchange). Higher balances increase your risk profile. Identify Attack Vectors Digital: Phishing emails, malware, or compromised exchanges.

Physical: Theft of hardware wallets or seed phrases. Social: Doxxing via social media or community leaks. Evaluate Likelihood and Impact: As a retail investor you might face frequent low-impact phishing attempts, while, as a whale you face rare but devastating targeted hacks. Prioritize Defenses: Focus mainly on high-impact, high-likelihood threats first (e.g., securing your seed phrase before worrying about quantum attacks, anon)

Case Studies: Famous Crypto Hacks and OpSec Lessons

Mt. Gox Hack (2014)

What Happened: Hackers stole 850,000 BTC ($460 million at the time) from the Mt. Gox exchange due to poor server security and unencrypted private keys; a more recent example was FTX. OpSec Lesson: Never store large sums on exchanges. Use hardware wallets and multi-sig for significant holdings. Ledger Data Breach (2020) What Happened: A database leak exposed 270,000 Ledger customers’ names, emails, and addresses, leading to phishing and SIM-swapping attacks; many got threatened via Email that somebody will come for them. OpSec Lesson: Just use pseudonymous email addresses (e.g., ProtonMail) for crypto purchases and enable 2FA with YubiKey or other authenticators, just never via SMS. Axie Infinity Ronin Bridge Hack (2022) What Happened: North Korean hackers stole $600 million by compromising private keys via a spear-phishing attack on a developer. OpSec Lesson: Developers must use air-gapped systems for key management and train teams to spot phishing. By modeling your threats, you can tailor your OpSec practices to your specific risks, in order to go for the right solutions.

1.3 Creating Your Crypto OpSec Mindset

OpSec is not just about knowing the right tools and having the fitting checklists, it is more a mindset than anything else. You

need the right mental framework, too, in order to ensure that you are making conscious decisions instinctively; something that has to grow over time rather than overnight.

There are three core principles that you should impregnate in your brain asap: Compartmentalization Separate your crypto activities from your everyday internet activity; use separate wallets for different purposes (holdings, trading, DeFi activity); use pseudonymous E-Mail addresses; use dedicated devices for cryptocurrency transactions to minimize malware risks. Least Privilege Make sure that you are granting the minimum access needed for any action when it comes to token approvals while using smart contracts; a great tool to limit permissions is revoke.cash; avoid sharing wallet balances and other financial info in public, no matter how harmless you might think it is; facilitate burner phones and wallets for untrusted dApps or airdrops. Trust Minimization ‘Don’t trust, verify’ is more than just a meme; you have to apply this to your OpSec, no matter if it is about exchanges, developers, or even friends and family; trust no one; verify wallet software downloads; learn basic smart contract auditing; use self-custody wallets in order to control your keys, never rely on third parties like centralized exchanges or brokers.

Cultivating the Mindset

Stay Vigilant: You should treat every link, DM, or airdrop as a potential threat until proven otherwise, no matter how ‘experienced’ you think you are – always. Learn Continuously: Follow relevant crypto security blogs and smart contract auditors to learn about (new) vulnerabilities. You can not just outperform people in trading, but also learning; it will pay off. Practice Discipline: Make OpSec your habit, like double or even triple checking wallet addresses before sending funds.

1.4 Tools You’ll Need

Your OpSec relies on tools to implement your defenses properly. This section introduces important tools / devices that every crypto enthusiast needs, with detailed setup advice in the following chapters.

These tools address wallet security, network privacy, secure browsing, and encrypted communication, all tailored to the demands of crypto peeps.

Hardware Wallets

Hardware wallets store your private keys offline, protecting them from remote hacks, with the best options being: Ledger Nano X ($149): Supports 5,000+ coins and tokens, it is ideal for hodlers and DeFi users. Trezor Model T ($179): Open-source firmware, touchscreen interface. Preferred by privacy advocates.

Setup Tip: Buy directly from ledger.com or trezor.io to avoid tampered deviceĥs; never buy second hand, it’s just a very stupid idea. Initialize with a fresh seed phrase, never reusing old ones.

VPNs

Virtual Private Networks (VPNs) mask your IP address, preventing hackers or ISPs from linking your location to crypto activity. MullvadVPN: High-speed,accepts XMR as payment. User-friendly for beginners. Setup Tip: Use a VPN when accessing wallets or exchanges, especially on public Wi-Fi. Enable the kill switch to prevent IP leaks.

Secure Browsers

Browsers designed for privacy reduce tracking and malware risks during crypto interactions. Librewolf (Free): Custom and independent version of Firefox with enhanced privacy. Brave (Free): Blocks ads and trackers, supports MetaMask integration. Ideal for DeFi. Tor Browser (Free): Routes traffic through the Tor network for anonymity. Use for sensitive tasks like accessing non-KYC exchanges. Setup Tip: Create a dedicated Brave profile for crypto to isolate it from other browsing.

Encrypted Messaging

Secure communication is critical for discussing crypto privately, especially in communities like Telegram or Discord. SessionApp (Free): Decentralized, End-to-end encryption, open-source. Use for coordinating with trading groups or developers. TutaMail (Free tier): Encrypted email for crypto-related accounts. Pair with a pseudonymous address. Setup Tip: Enable disappearing messages on Signal for sensitive chats and use ProtonMail for exchange sign-ups.

1.5 Checklist & Routines

Checklist:

• Define in detail what your personal OpSec goals are.
• Create your personal threat model, what assets you have, how

these assets are potentially threatened (phishing, exploits, hacks,...) and what your mitigation strategies are.

• Install essential OpSec tools, like a Password Manager, VPN,

secure browser and secure messaging app(s).

• Create your very own, one-sentence, OpSec mantra.
• Study prominent crypto hacks and exploits and learn from it.

Routines:

• Daily: Recite your OpSec mantra every morning (yes, I am

serious!)

• Weekly: Review your threat model and adapt if needed,

depending on if you started any new crypto activities, or if there are new threats emerging.

• Monthly: Research a new OpSec tool to broaden your skill set.

Chapter 2: Securing Your Crypto Assets

The decentralized nature of cryptocurrencies makes them a bearer asset, as control over private keys equates to the ownership of the funds, underscoring the utmost importance of securing your crypto assets in a proper way. There are no intermediaries to recover lost or stolen funds, and transactions are irreversible. In this chapter we will dig into how to secure your crypto assets, both, via software and hardware wallets, protecting seed phrases, advanced configurations such as multi-signature setups and smart contracts, strategies to avoid common scams as well as learning about techniques to enhance your transaction privacy. Pay good attention, as implementing these practices enable you to mitigate risks of theft, loss or general exposure, ensuring your assets remain secure at any point of time.

2.1 Choosing and Securing Wallets

A cryptocurrency wallet is a tool that enables you to manage private keys and interact with the blockchain of a certain coin or token. They are broadly categorized; first, we have ‘hardware wallets’, physical devices, and second, there are ‘software wallets’, which are applications or browser extensions. Both types come with various advantages and disadvantages and have different security requirements, often requiring a different level of technical expertise, making it not so easy to make an educated decision.

Hardware Wallets

Hardware wallets are physical devices, mostly looking more or less like an ordinary USB stick, that are specifically designed to store your cryptocurrency private keys offline, in order to make them highly resistant to hacking attempts. For long-term storage of cryptocurrency holdings they are the way to go. Wallets like the Ledger Nano X or Nano S are supporting thousands of different coins and tokens, including Bitcoin and Ethereum, utilizing a secure element chip, similar to those used in credit cards, as a shield for your private keys.

An alternative to Ledger is the company Trezor, who are also selling two different variants of hardware wallets, the Model T and the One, with the Model featuring a touchscreen for enhanced usability. If you are ready to spend some money ($50 - $200) to ensure that your assets are protected, and you don’t need to make frequent transactions, a hardware wallet is the way to go.

Software Wallets

Software wallets on the other hand are applications or browser extensions that make sure that your private keys are securely stored on a device, making them more suitable for active traders and users of DeFi protocols. TrustWallet, a very popular choice, is operating as a mobile app as well as browser extension, giving you access to Ethereum and all EVM-compatible chains. Apps like TrustWallet are posing a higher risk though, as the device-based key storage opens attack vectors for Malware. Usually, software wallets are free and integrate without any problems with decentralized apps, but as they are connected to the internet, the exposure of malware, phishing and other methods. Moreover, some software wallets operating are Cloud-based, adding even more risks, as one is relying on third-party infrastructure. Software wallets are typically free or low-cost and integrate seamlessly with decentralized applications, but their internet connectivity increases exposure to malware, phishing, or device compromise. Cloud-based software wallets introduce additional risks by relying on third-party infrastructure.

What Wallet is Right For You

In order for you to choose the right wallet, you have to be aware of your personal needs. If you are looking for a wallet to hold funds long-term, a hardware wallet from Ledger or Trezor offers maximum security and is also easy to handle for beginners. If you are a more active market participant, making transactions on a daily basis, then you are better off with a software wallet, which you can also connect with your hardware wallet for large transactions.

Most important for beginners is, however, not choosing the right wallet, but even more so to take good care of securing the seed phrase properly.

Securing Your Seed Phrase

Whatever you do when setting up a cryptocurrency wallet, you have to be aware of the fact that the seed phrase is the master key to your wallet and that losing it results in potentially permanent loss of funds; its theft compromises the entire wallet, so securing it the best way possible is paramount.

Never store it digitally on your phone or computer, or cloud services like Google Drive and iCloud, as this is simply too dangerous, when taking the risk of hacking, malware or accidental exposure into account. Always create physical backups, such as engraving the seed phrase on a metal plate (products in this context: Billfodl and Cryptosteel), consisting out of stainless steel or titanium that can withstand fire, water and corrosion. A low-cost solution would be to write the seed phrase on a high-quality, acid-free paper, using a non-fading pen, and storing it afterwards in a waterproof and airtight container.

If you want to take it a step further, you can facilitate basic cryptographic techniques like ‘Shamir’s Secret Sharing’, splitting the seed phrase up into multiple parts, such as 2-of-3 shares, storing each part in a separate location. This way, no single compromised location could possibly reveal the full phrase. Many people like to use bank safe deposit boxes, as they are well protected against theft and natural disasters; while I personally don’t want to deal with banks in this regard, I understand why it is a feasible option for many. At home, a fire- and waterproof safe that withstands a fire with 1,700°F is the way to go to protect your seed phrases. When you generate your seed phrase, always use a secure environment, most importantly use an air-gapped computer or hardware wallet, with no active cameras, microphones or networked devices nearby. Never share the seed phrase with anyone and test the backup process from time to time.

2.2 Multi-Signature (MultiSig) Wallets and Smart Contracts

If you are managing a significant amount of crypto assets or are simply seeking advanced security, you can facilitate multi-signature wallets and smart contracts, which both provide robust protection by requiring multiple approvals for every single transaction; no matter if personal funds, business accounts, DeFi asset management, it mitigates risk in any case. One configuration that is often used is ‘2-of-3’, where two of three keys must sign a transaction in order to get approved. You can set up a simple ‘2-of-3’ multisig via tools like ‘Electrum’, which allows you to create a 2-of-3 wallet using a combination of hardware and software wallets.

‘Specter Desktop’ is an open-source Bitcoin Wallet which also supports multisig-wallets, specifically via air-gapped devices, including hardware wallet integration; however, it is rather for more advanced users. If you aren’t a very technical person, ‘Casa’ is a service that can help you to set up a pre-configured multisig-setup like 3-of-5, with a guided recovery process.

Smart Contracts: Multisignature Wallets on Ethereum

Smart contracts on Ethereum enable you to create multi-signature wallets within a structure that offers customizable logic for transaction approvals. One of the leading solutions is ‘Gnosis Safe’, supporting setups like 3-of-5 signatures, directly integrated with DeFi protocols. ‘Aragon’ enables multisignature wallets for DAOs, while OpenZeppelin provides a lightweight and open-source option. The process of setting up a Gnosis Safe is straightforward. You can access its web interface or mobile app, connect your software wallet and deploy the contract on Ethereum or a compatible chain (i.e. Polygon). During the setup you have to specify the number of signers and required signatures, add the signers addresses and deposit some ETH into the contract for gas fees. You should use a hardware wallet for at least one signature, deploy it on chains with lower gas fees and audit signer addresses on a regular basis; now you can manage your assets and interact securely with all DeFi protocols.

2.3 Avoiding Common Wallet Scams

Scammers active in the cryptocurrency space are often targeting wallets, especially ones from newbies, exploiting their trust and

technical inexperience; however, some are so sophisticated, that they even gained access to a BTC wallet with $330M worth of Bitcoin just recently, before dumping BTC for XMR on instant exchanges. Understanding the common threats is essential in order to never, ever fall for it: Phishing: The goal of phishing attacks is to create a site mimicking a legitimate wallet interface, such as Metamask or Ledger Live, in order to steal seed phrases and private keys. These sites are often distributed via E-Mail, social media, even via Ads on big platforms. They all try to replicate the official branding, thus trying to fool the user. Phishing defenses include using a password manager in order to autofill legitimate wallet login URLS, thus preventing accidentally logging into a fake website.

Fake Wallets: Distributed via Google Play or the App Store, fake wallets are mimicking legitimate wallets, same as phishing, but are embedding malware directly into the fake application to extract your keys. Clipboard Malware: This kind of malware observes your clipboard, replacing copied wallet addresses with an attacker’s address, thus redirecting the funds during your transaction. Social Engineering: No matter if posing as ‘Wallet Support Staff’, requesting sensitive data to ‘resolve’ certain ‘issues’, or fake giveaways and airdrops; especially X is full of those kind of frauds that want to trick you into connecting wallets to their malicious applications. Always verify the authenticity of any crypto software, but wallets in particular, only download it from official websites after confirming the domain name and valid SSL certificate; you can also bookmark URLs, or type them from memory manually, to avoid phishing links from other sources. For apps, always verify the name of the developer and review the user feedback. Some wallets, i.e. Electrum, require cryptographic checksum verification, i.e. SHA-256 hashes, to confirm the authenticity of the software; users can go and compare the provided hash from their website using tools like sha256sum. Wallets like Electrum are also open-source, enabling anyone to review their code. When it comes to hardware wallets, only purchase them directly from manufacturers or authorized resellers; never, I repeat, never (!!) buy hardware wallets second hand or from sources that you

simply can not verify. Once you bought one, verify the firmware through the software, i.e. ‘Ledger Live’ or the ‘Trezor Suite’, before using it. ‘Hygiene’ is not just important when it comes to physical hygiene, but also when it comes to your ‘device hygiene’. When creating a wallet, you want to use a dedicated device, free of any malware, ideally with a clean Linux installation or a factory-reset, to minimize risks. Always avoid public Wi-Fi’s or shared computers, always make sure that all crucial software is regularly updated. When sending a transaction, double- or even triple-check the wallet address you entered, before hitting ‘Send’.

2.4 Transaction Privacy Techniques

Transactions on blockchains such as Bitcoin or Ethereum are

pseudonymous, not anonymous, something that many people still haven’t understood, besides the fact that it is already the year

• Wallet balances and transaction data are exposed, anyone

with internet access can use a block explorer to trace transactions; and due to widespread KYC-measures, enforced by centralized exchanges (CEXs), those wallet addresses and transaction ID’s can also be tied to real-world identities; in order to protect your financial privacy, a fundamental human right, you have to minimize on-chain footprints whenever possible. In this regard, there are many different methods, beginning with so-called ‘Crypto Mixers’. Those mixers pool funds from multiple users and redistribute them to fresh addresses, hence obscuring the transaction trail. ‘Tornado Cash’ was one of those mixers until it got shut down by the U.S. Gov in 2022. Kinda similar solutions are still available, with CoincealCash being one of them, launching in Q3 2025. For Bitcoin, the very same technique is used by so-called ‘CoinJoins’, for which you’ll need a compatible wallet. Mixing process can take some time, as it depends on the network activity. Also important to note, you should never send CoinJoin-related funds to a CEX, as they might flag and / or freeze your funds. In order to really give blockchain analysts a hard job, you have to use privacy-focused cryptocurrencies such as Monero (XMR), which offers untraceable transactions by default, employing ring signatures, stealth addresses and confidential transactions. Sender, receiver and amount are always hidden, making it the most private cryptocurrency on the market; in any case, always avoid

exchanges and swap services that require KYC, linking your wallet addresses to your real-world identity. Decentralized exchanges (DEXs) or P2P-platforms are the only way to go when you want to protect your personal data. To further minimize on-chain footprints, you have to step up your wallet management game. Too many people are using one and the same wallet for many different purposes, something you want to avoid. Create separate wallets for distinct purposes instead, purposes such as savings and trading funds, limiting exposure if one wallet might be compromised in the future. Hierarchical deterministic wallets give you an important advantage in this regard, as they are generating a new address for each transaction by default.

Moreover, keep an eye on your transaction patterns, you wouldn’t believe what amount of data is gathered from crypto transactions and how they can be analyzed. Vary your transaction schedules, don’t send the same amount multiple times, don’t send transactions every Monday on 12:00 either, as all of this would enable profiling; protecting your metadata is important. That’s also the reason why you should always use a VPN in order to mask your IP address, especially during wallet or node interactions. Best practice is to simply run an own node, so you can broadcast your transactions directly into the network, not relying on third-party nodes that maybe or maybe not log your metadata.

2.5 Checklist & Routines

Checklist:

• Dig into secure wallets and what will be the best fit for you

(short- vs. long-term storage; software vs. hardware wallet)

• Back up your private keys and seed phrases offline in secure

locations.

• Use multi-sig wallets for wallets that contain a lot of

funds.

• Test wallet recovery with a small amount first to ensure the

backup works like it should. Routines:

• Daily: Always double-check the wallet addresses before

sending a transaction, better be safe than sorry. I have been doing this personally since Day 1 and have never, ever, sent funds to a wrong address.

• Weekly: Check if your wallet software and other essential

tools are updated and that all your backups are secure.

Chapter 3: Protecting Your Digital Identity

Besides your private keys, there is something of similar importance, however, most people are simply not aware of HOW important it is in fact is: The protection of your digital identity. Through a compromised digital identity you enable attackers to target you due to exposing your sensitive activities. The decentralized nature of cryptocurrencies places the burden of protection on YOU, no one else. In this chapter we will explore the multifaceted approach to safeguard your digital identity, covering secure devices, safe browsing, communications and management of online personas.

3.1 Securing Your Devices

Take special care of any device that is used by you to access cryptocurrency wallets, exchanges or social media platforms, it is

your first line of defense for your digital identity; phones, laptops and desktop computers are their prime targets, from which they want to steal private keys, intercept your communications or fixing up your device with malware. If you harden those devices, making intrusion almost impossible, your first foundational step regarding OpSec is already done.

Smartphones: It doesn’t matter if you are running Android or iOS, both are vulnerable if not properly secured. First, make sure to have a strong alphanumeric passcode to prevent unauthorized access. Also disable lock screen notifications, so that sensitive information is not displayed in the wrong place at the wrong time. Always update your phone’s software so that security vulnerabilities are patched up as soon as possible. Never install software from third-party platforms that are not the Google Play or the App Store. Installing apps only from the Google Play Store, after verifying developer legitimacy, reduces the risk of malicious software. Disabling USB debugging and enabling Google’s Play Protect, which scans for harmful apps, further hardens the device. Both platforms benefit from encrypted backups-iCloud for iOS with a strong password, and Google Backup for Android with encryption enabled-to protect data in case of loss or theft. Laptops and Desktops: First things first; if you aren’t running Linux already, it really is time to reconsider, as Windows and macOS, while user-friendly, are common targets due to their widespread use. If you are using Windows or macOS, make sure to have a fully encrypted hard drive that protects your data in case the device gets stolen; for Windows operating systems you can use BitLocker, on macOS FileVault. Creating a standard user account instead of an admin account for daily use is also a good measure, in order to limit the impact of malware. Moreover, disable remote desktop services as well as unused network protocols, such as SMBv1, to reduce attack surfaces even more. However, Linux is the real deal, as it offers a secure, open-source operating system, while many distributions have a specific focus on privacy. For beginners, go with Ubuntu or Tails, both well-suited for any crypto activities. While the attack surfaces are smaller in general, you still have to make sure to have a firewall in place to block unauthorized connections; also don’t forget to check for updates every now and then. For maximum security it is recommended to dedicate a device exclusively to crypto activities, such as a low-budget laptop, on

which you are not surfing the web or social media, thus limiting your exposure to potentially malicious websites. Ideally the device runs a clean installation of Linux (i.e. Tails) while routing all traffic through TOR. The dedicated device should never be connected to public Wi-Fi’s and just run software that is essential for your crypto activities. If this is too impractical for you, set up a specific partition on your main computer and install Linux there.

3.2 Safe Browsing and Communication

Safe Browsing

Whenever you are browsing the internet, but especially when you are communicating with people within the crypto ecosystem, your digital identity is exposed to surveillance, phishing and social engineering attacks, which is why you have to adopt secure tools and practices for activities that give away sensitive information, in order to maintain privacy and avoid the traps set by scammers. The least you can do is to use a VPN, such as Mullvad, that encrypts your traffic and masks your IP address; whatever service you might choose, make sure that it is one that accepts cryptocurrency payments (preferable XMR for obvious reasons), operates via servers in privacy-friendly jurisdictions (i.e. Switzerland; Panama) to further enhance the protection of your personal data. If you want to take it a step further, you can also facilitate the TOR network. Via the TOR browser you can surf the web anonymously, as the traffic is routed through multiple relays worldwide, obscuring your IP address and location; it is almost impossible to connect your TOR activity with an IP-address (= real-world identity). Overall, you should aim for using a solid VPN on a daily basis, while using TOR for the most sensitive things, but just those that don’t require high bandwidth, as such tasks would take too long with TOR, due to its speed limitations.

Encrypted Communication

Using encrypted communication channels is of equal importance, especially when you are often discussing crypto transaction details or sharing any kind of sensitive information regarding

your cryptocurrency activities. TutaMail offers end-to-end encrypted email services with a user-friendly interface; only the sender and the recipient can access the contents of messages. Setting up a TutaMail account with a pseudonymous username, ideally paid for with cryptocurrency (they accept XMR!), is the way to go. When it comes to instant messaging, I recommend Session for everyday communications, as it offers end-to-end encryption, runs on a decentralized architecture and there is no need to have a phone number in order to sign up.

That said, mainstream platforms such as WhatsApp, Telegram or Gmail, which are not offering any robust encryption and / or are harvesting metadata, are to be avoided for anything remotely important. When using X and / or Discord, as it is common in our industry, always have your guard up, as social engineering attempts are ‘business as usual’ on those platforms. Scammers have different approaches, sometimes impersonating support staff from an exchange, project developers, or trusted community members from a specific channel, trying to trick their victims into revealing seed phrases, clicking malicious links or installing some kind of software. When getting approached, always verify identities through official channels before engaging in a conversation. Always be skeptical, even when a message looks legit at first, as accounts can also be compromised.

3.3 Managing Online Personas

If you don’t want to participate in the cryptocurrency markets and its community with your real-world identity, you can simply set up different online personas for different purposes. Those personas are pseudonymous, carefully crafted identities, that are exclusively used for crypto-related activities. In order to create a persona like this, start with thinking about a username that avoids any personal identifiers, such as your birth date, place of origin, and also doesn’t overlap with any other (non-crypto) persona you might have already. Connect every single persona to a different TutaMail email address. When posting on social media, avoid sharing details that might be cross-referenced in the future, for example your timezone, the local weather or specific hardware that you are using. It is still possible to build up a good reputation with a pseudonymous online persona, but you have to be disciplined to avoid accidental leaks.

I have seen it way too often that people on X are posting

screenshots of their wallets, without even thinking what unique details it provides, when not redacted; wallet addresses, transaction IDs, all that are simple things that can tie your persona to on-chain activity. When you want to post something in this regard, make sure to redact all important sensitive details with a graphic editor like GIMP.

The big problem you are facing is called KYC; many exchanges and platforms require it, demanding your passport, driver’s license or other form of government issued ID, leading to a link between your real identity and crypto activities of your pseudonymous persona. Because of this, you should use decentralized solutions whenever possible. When KYC is unavoidable, at least use platforms that have certain data protection policies and opt for the minimum information required. When a platform asks you for a phone number, use a virtual number from services like ‘MySudo’, pay for it with crypto and et voila, you have a disposable email address. Check data breach databases on a regular basis, ‘HaveIBeenPwned’ is one of my favourites, there you can check if your email address appeared in some leaks.

3.4 SIM-Swapping and 2FA Best Practices

A very common attack vector is SIM-swapping and poor two-factor authentication (2FA) setups, which both can lead to compromised accounts and exposure of personal information. It is of utmost importance that you are implementing a bulletproof authentication method. ‘SIM-swapping’ happens when an attacker is able to convince your telecom provider to transfer your phone number to a new SIM card, thus enabling the attacker to intercept SMS-based 2FA codes that give access to exchange or email accounts. That’s the major reason for why you should never, ever, tie a phone number to a SIM card. If you do, make sure to agree with your telecom provider on a security PIN that is getting asked for once a request for a change is made. While many people falsely think it is safer to use a well-known, big carrier, I personally think that it is safer to use a lesser-known carrier with a prepaid plan; afaik high-profile carriers are exploited way more.

But, again, it is not recommended to use SIM-based 2FA, rather go with Google Authenticator or Authy, as they are not relying on SMS. If you are looking for a more secure solution, check out hardware security keys (i.e. YubiKey), as they are offering the strongest alternative due to the fact that it requires physical possession of the device in order to authenticate. YubiKey supports multiple protocols (FIDO2, U2F,..) and works with all major platforms. During the YubiKey configuration you have to register each account individually, secure your backup key and enable recovery codes.

• 5 Checklist

Checklist:

• Secure all of your devices and, if you haven’t done it

already, fully encrypt your disk and install antivirus software and malware scanners; if you are running Linux, still take care of your firewall.

• Set up a VPN and encrypted messaging for all sensible comms.
• Create pseudonymous accounts on X and Reddit for your crypto

activities.

• Enable 2FA, everywhere, just never via SMS.

Chapter 4: Advanced Crypto OpSec Strategies

With the growing adoption of cryptocurrencies, also the sophistication of threats targeting crypto-assets is growing, making it necessary for market participants to know about advanced OpSec strategies, especially when you are somebody with significant holdings and / or are operating in high-risk environments (i.e. dictatorships, war zones,...). Advanced OpSec, anything that goes beyond basic (wallet) security and identity protection, requires detailed planning to safeguard assets against physical theft, smart contract vulnerabilities blockchain surveillance and a multitude of other potential failures. In this chapter we will take a look at DeFi / smart contract vulnerabilities, the threat of blockchain analysis and a selection of worst case scenarios. By mastering OpSec, you fortify your crypto operations, even against pretty determined attackers.

4.1 DeFi and Smart Contract Security

DeFi Security

The world of Decentralized Finance (DeFi) offers a lot of new opportunities, such as yield farming, lending, and trading in a decentralized manner. However, those protocols are running on smart contracts and those can potentially be poorly coded or include straight-up malicious code that aims to fleece its users at some point. To be able to do a basic smart contract audit and have a procedure to manage token approvals, are very important when you want to protect your funds.

Before interacting with any DeFi protocol you have to verify its smart contracts are safe; of course, not anyone has the time and / or motivation to become a Solidity expert themselves, which is why you will have to rely on third party audits by companies like TrailofBits. Even if you lack deep technical knowledge, those audits will give you some insights into vulnerabilities that were identified already. If a protocol has no audit at all, proceed with extreme caution, as the risk of vulnerabilities is significantly higher; in my opinion you shouldn’t engage with those if you are unable to make your own technical assessment. If you do, at least check the contract’s transaction history for suspicious activity, like large withdrawals that can’t be explained; check the community on platforms like Discord and X, as it could reveal (bad) user experiences or reported issues that you weren’t aware of. Always verify information through official channels to avoid falling for any kind of FUD.

Managing Token Approvals

Managing token approvals in your wallets is another critical aspect when it comes to DeFi security. Most protocols require you to grant spending permissions to their smart contracts – so far, so good. But, if left unchecked, these approvals can allow malicious contracts to drain your wallet. A powerful tool that helps you to avoid this is revoke.cash, as it allows you to monitor and revoke token approvals across different blockchains; simply connect your wallet to its web interface, let it scan your address for active approvals and be presented with a detailed list of contracts that you granted spending permissions and the name of the tokens.

I recommend storing a list of approved contracts in an encrypted file, tracking your DeFi activity without the need for using an external service.

4.2 Evading Blockchain Analysis

The transparent character of pseudonymous blockchains is a privacy nightmare. Transaction details, all of them, are publicly visible, enabling blockchain analysis firms, exchanges, and the authorities to track your every move, connecting your wallet to online personas or even your real-world identity. The only way to avoid this is to learn how to break transaction links, so that your financial privacy remains intact.

As you already know by now, a big part of blockchain analysis is analyzing transactions and tracing funds. For that purpose, blockchain analysis companies analyse each transaction on any non-private blockchain, classify and group wallet IDs. If there is any suspicious activity an alert is set. Also it is possible for them to present the flow of funds in a transparent way. Something that is not that easy when transactions are linked to thousands of wallets. In short, the blockchain analysis process contains three steps: Address Classification: Connect pseudonymous blockchain address with real-world entities Transaction Risk Scoring: Machine learning giving a score to every transaction Investigation: Further investigation & visualization; a good overview of common visualization types can be found here. The probably most well-known company in this space is Chainalysis. Founded in 2014, they raised more than $40M and have a lot of ‘heavy weight’ clients, including the IRS, FBI, DEA or also exchanges like Binance. They are monitoring more than 80 blockchains, and work together with hundreds of companies. Besides Chainalysis there are many more analysis companies, such as CipherTrace, CoinMetric, Elliptic or Elementus. Let’s take a practical example: You are sending Bitcoin to a KYC’d exchange, such as Binance or Coinbase, directly associating your wallet address with your verified, real-world identity, thus creating a traceable link. Exchanges may flag incoming transactions that are involving ‘tainted’ coins (i.e. Bitcoin that was sent through mixers or have an illicit origin), leading to

potentially frozen accounts. To evade blockchain analysis, you have to obscure the connection between your transactions and your identity.

Cross-chain swaps, facilitated by protocols like ThorSwap or SimpleSwap, offer another method to break transaction links, as you can swap BTC for a privacy coin like XMR, then swapping back to BTC or a different asset, to create a discontinuity in the blockchain trail, as Monero’s ring signatures and stealth addresses obscure transaction details; many of those platforms operate without KYC, further enhancing anonymity. But you should always test with small amounts first and research the platform’s reputation in advance.

Always use self-custody wallets, ideally one that generates a new address for every transaction, thus complicating wallet clustering analysis; never follow a regular transaction schedule, send funds at different times, to avoid pattern-based profiling; run your own nodes, to be able to broadcast your transactions directly, bypassing third-party nodes that may log your metadata. While complete anonymity is challenging, these strategies significantly hinder blockchain analysis and help to preserve your financial privacy as much as possible.

• 3 Preparing for Worst-Case Scenarios

You can have the best OpSec, but there is nothing that prevents humans from making mistakes; mistakes that can lead to worst-case scenarios, such as lost keys, compromised wallets or other devices that jeopardize your crypto-assets. It is essential to have recovery plans ready that help you to limit the risks you are facing in scenarios like that.

Recovery Plan

As already talked about before, a recovery plan begins with secure, redundant backups of all essential data; storing seed phrases in multiple locations (home safe, safe deposit box, using Shamir’s Secret Sharing for added security) ensures that you can always recover your funds. Always document everything in an encrypted file, including the software details of wallets, your backup locations and instructions for reconstructing your keys. Keep this file on an offline USB drive and use VeraCrypt, or a similar tool, to encrypt it, to prevent unauthorized access. Every

now and then you can test the recovery process in order to keep peace of mind. When a wallet is compromised you have to act fast; when you become the victim of malware, or a phishing attack, immediately transfer funds to a new, secure wallet, generated via air-gapped device, to contain the damage.

Inheritance Planning

Most crypto market participants are in their 20s or early 30s, hence it is not a surprise that most of us are never thinking about the scenario of suddenly dying / inheritance planning of one's crypto-assets.

Inheritance planning aims to make your assets accessible to your heirs without exposing them to risks while you are still alive. It is possible to create a dead man’s switch implemented in a smart contract that triggers fund access after a specified time or period of inactivity, however, this requires a bit of technical knowledge. An easier solution is sharing the recovery instructions with a trusted executor, such as a family member or a lawyer, without revealing the full seed phrase; here we are again at the ‘Shamir’s Secret Sharing’! You don’t have to give the seed phrase out while you are alive, at all, you can also draft a letter of wishes, detailing the locations of your wallet(s) / physical seed phrase backups, and give further instructions on how to recover your crypto-wealth.

4.5 Checklist & Routines

Checklist:

• Set up cold storage wallets for your long term holdings.
• Verify smart contracts before interacting with any DeFi

protocol, especially when it’s a new one; otherwise it can be expensive for you.

• Use privacy coins like Monero (XMR) or privacy-enhanced swap

services (Trocador.App) to obscure your transaction trails.

• Practice to restore your wallet from your backup. I fucked

this up once, and well, it cost me around $50,000.

Routines:

• Daily: Make sure that your cold storage devices, i.e. a

Ledger Hardware Wallet, is disconnected after usage.

• Weekly: Check online for any new security audits or reported

vulnerabilities of projects you are interested in.

• Monthly: Double-check your recovery plan to confirm it is

up-to-date.

Chapter 5: OpSec Habits and Maintenance

Unfortunately, OpSec in the cryptocurrency realm is not a one-time effort but a continuous endeavour that requires vigilance, adaptability and discipline, as minor lapses in routine or awareness of new threats can lead to worst case scenarios. You have to embed your security habits into your daily life as much as possible, always evaluating your setup, always staying up-to-date when it comes to new threats. This chapter explores routines, OpSec checklists and information sources that will help you to stay safe long-term.

5.1 Daily OpSec Routines

Ensure the safety of your crypto-assets by establishing daily OpSec routines, this way you will always stay resilient against most threats. Those routines are the backbone of your long-term security; check your wallet balances securely, as a fundamental daily task, as unauthorized access or unexpected changes can signal that the wallet was compromised; access wallet interfaces always on trusted, malware-free-devices; always bookmark official sites to prevent phishing attacks.

When checking balances, simply use a blockchain explorer like Etherscan for ETH/EVM Chains or blockchain.com for Bitcoin to cross-reference your wallet’s on-chain activity. If there are ANY discrepancies, like unfamiliar withdrawals, directly transfer your funds to a new, secure wallet, generated on an air-gapped system and investigate the breach afterwards. If you are using hardware wallets, checking them on a regular basis and updating software and firmware is another critical routine to address vulnerabilities that could compromise your funds. Software wallets, like Electrum or TrustWallet, are also frequently releasing patches to fix flaws in their security, or, more often, improve functionality. Checking for updates at least once a week should be a mandatory rule for you. Before updating, verify the cryptographic checksum, using tools like sha256sum on Linux or Get-FileHash on Windows. Beyond wallets, keeping your VPN client, Tor Browser and the operating system itself updated at all times mitigates risks from vulnerabilities being exploited.

• 2 Auditing Your OpSec Setup

You should take good care of all essential devices and accounts and regularly audit them to ensure that your security measures remain effective; auditing devices begins with verifying their integrity and configuration. If you are using a dedicated device for your crypto activities, i.e. a Linux Laptop, inspect it weekly for physical tampering (altered screws, unfamiliar USB connections,..). Moreover, run a malware scan – even on Linux – using tools like ClamAV, to make sure no malicious software has made it into your system. Next, verify that your full-disk encryption remains active.

Checking the network settings to confirm that it remains

disconnected from unauthorized networks. For smartphones it is of utmost importance that you are reviewing installed apps and, in particular, the permissions that you were giving to it. When it comes to auditing accounts, you have to review access to all crypto-related services you are using, most importantly exchanges, wallets and email providers. Rotate passwords, check login history for unfamiliar activity, make sure that your 2FA backup keys are in order and revoke unnecessary third-party access (i.e. outdated API keys on exchanges).

5.3 Staying Updated on Threats

The cryptocurrency landscape is truly a dynamic battleground, with new threats and attack vectors emerging almost every day. To stay informed about those threats and new, upcoming developments, is essential to adapt your OpSec practices. Attackers don’t know weekends, they don’t know 8h work days; you have to put in some effort in order to not become one of their victims. Following reputable people and blogs in the Crypto & Security space will give you a steady stream of updates and insights regarding those emerging threats. Also, always keep an eye on smart contract auditing firms and their activities, as they are releasing reports on new audits on a regular basis, delivering detailed insights into all kinds of (new) DeFi risks. For more general Cybersecurity issues you can can check the National Vulnerability Database (NVD), providing technical details on software flaws that potentially affect crypto tools that you are using; look for anything related to the terms ‘wallet’, ‘blockchain’ or ‘Ethereum’, to narrow the focus to for you relevant threats. Wherever you get your information from, make sure to cross-reference it with as many reputable sources as possible to avoid any kind of misinformation and to ensure utmost accuracy; while doing this, always maintain a curated list of trusted sources, in an encrypted file, to streamline your research results.

5.4 Community and Collaboration

While there are many bad actors and low-IQ clowns in the crypto community, it is overall still a very vibrant ecosystem of

enthusiasts who share, more or less, the same vision. There are always opportunities to learn, share and refine OpSec practices, together. Of course, when communicating about OpSec on public platforms, you have to protect your privacy in order to not share the wrong piece of information. Platform number one is still X (formerly Twitter) when it comes to anything cryptocurrency-related. If you are looking for specific project’s information related to general security, a good shot is always to visit the Discord; often they have a ‘Security’ sub-channel.

Joining those platforms with a pseudonymous identity, meaning unique username and an email address that is unrelated to your real-world identity, while using a VPN to mask your IP address, is the proper way to go; as well as sharing OpSec tips with others, however, you have to be careful when it comes to your wording, in order to protect your identity. When offering advice, always use general language, avoid specifics at all costs. When recommending hardware wallets, just do that, don’t mention a specific model that you are using yourself. What many people in our industry are doing is to generate various alt-accounts, various pseudonymous identities, often rotating, in order to reduce long-term exposure. Personally, I have an alter-ego, too, and no one knows that it’s me. We are all in this together, and thoughtfully, discreetly shared knowledge can go a long way, growing the community’s collective wisdom, enhancing the OpSec level for anyone.

5.5 Checklist & Routines

Checklist:

• Create a 5 - 10 minute daily OpSec routine, including

checking 2FA (backup) codes, verify wallet balances and scan your Emails and social media DMs for anything suspicious.

• Full OpSec audit, review all of your wallets, devices,

accounts and backups for any potential weakness; just do it!

• Document your OpSec setup and store it in an encrypted file.
• Follow relevant people on X to stay up-to-date.

Routines:

• Daily: Complete your previously planned OpSec routine. No

matter if you feel like it, or not, do it every day.

• Weekly: Read a security audit, an extended article that is

relevant to OpSec; generally, stay informed as best as you can.

• Monthly: Conduct a mini-audit of one or two OpSec areas and

fix issues if needed.

Open-Source Intelligence (OSINT) in Crypto

Chapter 1: Foundations of Crypto OSINT

Since I accessed the internet for the first time at the end of the 90s, the vast pool of information that was available to anyone with a dial-up modem was insane for me, even though I was just a kid. Later, in 2007 when I started to dabble with SEO, learning about search engines and how they work, also my OSINT journey started. OSINT stands for ‘Open-Source Intelligence’ and is a powerful discipline when it comes to researching individuals, companies, or anything else, really, leveraging publicly available data to uncover a multitude of insights. Especially in crypto, a decentralized and mostly transparent environment, where information is not just abundant, but scattered, OSINT enables you to conduct due diligence, assess risks and protect your assets accordingly. However, it demands some technical skills, as well as ethical restraint and knowledge of legal boundaries, so that you don’t go over to the ‘dark side’ and are misusing the tools at your disposal.

In this chapter we will explore the very essence of OSINT in a cryptocurrency context, the available data sources, ethical and legal frameworks, as well as a presentation of different tools and OSINT practices. By mastering the OSINT foundations you can enhance your OpSec significantly by making more informed decisions.

1.1 What Is OSINT in Crypto?

In a crypto context, OSINT involves collecting and analyzing publicly available data to gain insights, no matter if it is about a crypto wallet, an exchange, a founder from a startup, a VC, or simply potential threats in general; this data can be blockchain records, social media posts, project websites or public databases.

It is a critical tool for every crypto market participant in order to research the legitimacy of projects / tokens, track suspicious actors / activities or to evaluate the credibility of a company's team; it is your cornerstone for due diligence. For example, analyzing the GitHub repository of a specific project reveals the frequency of code updates and if there are any security audits from the past, or not. OSINT helps to spot red flags, such as a project’s founders association with known scams, or a lack of transparency regarding their team in general. Want to uncover patterns of potentially malicious transaction activity? No problem, the blockchain explorer is your friend. Want to expose phishing campaigns or investigate a suspicious airdrop? Social media analysis is the way to go. Whatever the scenario, OSINT empowers you to make evidence-based choices, rather than just to rely on your gut feel and ‘vibes’, thus reducing the probability of falling for a scam. If you develop a methodical approach and combine it with a solid portion of curiosity and skepticism (to avoid misinformation or biased narratives that are floating everywhere) it is a great skill to have when being an active crypto market participant.

1.2 The Crypto Data Goldmine

The amount of data regarding cryptocurrencies, as well as exchanges, protocols, companies and other entities is simply mind boggling, and can reveal critical insights into market trends, project integrity and potential threats, once analyzed systematically, enabling you to make informed decisions and be proactive when it comes to security measures.

The transparent character of blockchains like Bitcoin and Ethereum don’t always have to be a negative factor; the fact that every transaction, wallet balance and smart contract interaction is stored and publicly available forever can also be of help in some cases; for example when you want to track the wallet movements of a whale to get a better clue of the current market sentiment; a whale transferring hundreds or even thousands of BTC to an exchange might signal an upcoming sale of such coins, while a movement to a cold storage wallet would indicate the intention of long term holding.

Blockchain data can also help you to identify scam tokens, something we certainly have more than enough around in the year 2025; if the smart contract of a newly launched token shows a highly concentrated ownership, it raises suspicions of a rug pull. Exploring the transaction history can reveal if any of the project’s funds are linked to addresses that are already known for malicious practices, i.e. being tied to a former rug pull. Besides blockchain data, another great pool of valuable information are social media platforms, X and Discord in particular; when it comes to Reddit, it depends on what exactly you are looking for, generally speaking I am not the biggest fan of Reddit and its users. Most important is to be active on X, following project accounts, their developers, or other influential / knowledgeable (follower count is not everything!) people who are providing real-time intelligence. User complaints and scam allegations are business as usual in crypto, hence it is important to go directly to the source to evaluate those claims for yourself. After X, the most valuable resource for most projects are Discord servers, offering direct access to the people in charge. If there is a new DeFi protocol with buggy smart contracts, chances are high that you will read about it first in their Discord, before the information goes public, thus elevating the risk of an exploit. Crypto exchanges, no matter if centralized (CEX) or decentralized (DEX), also provide helpful trading and wallet data; in the case of CEXs due to published transparency reports / proof of reserves as well as the possibility to track their cold- and hot-wallets; in the case of DEXs due to on-chain data regarding liquidity and interactions. For example, you spot a token that has low liquidity but high trading volume, then you probably discovered a case of wash trading, a common technique to inflate the price of a token artificially.

Crypto exchanges, both centralized and decentralized, provide additional OSINT through trading data, wallet interactions, and public disclosures. Centralized exchanges like Binance or Coinbase publish transparency reports or blog posts about security incidents, which can reveal compromised addresses or phishing tactics. When you combine blockchain, social media and exchange data, you can create an in-depth picture of an entity’s legitimacy, market activity and potential risks that come with it.

1.3 Ethical and Legal Considerations

When you are leveraging public data via OSINT, you have to take ethical and legal considerations into account, or, well, you should, if you want to avoid harm or liability. A matter of self-responsibility if you want to see it like that, personally I am always making sure to act within legal boundaries, as I respect the privacy of others, generally speaking. As long as your research is limited to 100% publicly available information, i.e. blockchain data, social media posts or exchange data and you don’t access restricted systems or even private accounts, you are good; restricted systems / private accounts also include that you can not just go and, for example, scrape private Discord channels or use stolen credentials in order to access data of any kind. Violating those basic rules (U.S. Computer Fraud and Abuse Act; GDPR in the EU) could lead to severe criminal penalties. Still, even the collection of purely public data can become an issue if misused. Let’s say you are investigating wallet addresses, you aggregate some in order to dox an individual by linking them to a real-world identity before publishing the result on social media; this can still infringe privacy laws in certain jurisdictions. Make sure that you know the boundaries, especially when your goal is to publish information on something / somebody. You should always prioritize harm reduction and show respect for the privacy of others, even in a transparent ecosystem like crypto. Also, never share unverified findings prematurely; one time I made this mistake, accidentally connecting a persona with somebody who had nothing to do with it (a scam operation in this case), at all. Collect only the data that is necessary for your research, try to adopt a principle of minimal intrusion; and when you share your

research with anyone, make sure to anonymize data, i.e. wallet addresses.

1.4 Tools for Crypto OSINT

When you are digging into Crypto OSINT the very first time, you will soon realize how many tools are available for many different purposes when it comes to collecting, analyzing and visualizing public data; blockchain explorers, social media aggregators, data scraping tools; there is a lot to learn about – let’s start! Blockchain Explorers: Blockchain explorers are obviously indispensable for analyzing on-chain data, offering (more or less) user-friendly interfaces to navigate public ledgers.

Etherscan, for Ethereum and EVM-compatible chains, allows you to check wallet transactions, smart contract interactions, and token balances, with features like address labeling to identify exchanges or known scams. Blockchain.com serves a similar role for Bitcoin, providing transaction histories and wallet activity insights. There are also somewhat more advanced explorers, like Blockchair, which support many different blockchains and offer you filtering options to check specific transaction types, i.e. coin transfers with a certain min. value. Social Media Aggregators: Let’s not kid ourselves, besides X (formerly Twitter), there is not really an alternative that delivers the same kind of vast information regarding cryptocurrency projects; yes, sometimes there are some interesting posts on Reddit, but then again, I personally can’t remember when that was the case the last time. Via X Pro (formerly ‘Tweetdeck’), accessible when you have a premium account, you can drastically simplify sentiment analysis and threat detection, by monitoring keywords or accounts related to a token or protocol. To track sentiment for specific projects even better, you can try tools like ‘Santiment’ or ‘LunarCrush’; both offer a limited free plan, so you can try it without cost. If you want to go to the ‘deep end’ and are a bit more of a technical person, you can also go ahead and scrape data via scraping tools such as ‘BeautifulSoup’ for Python, or, if you don’t want to code, ‘Octoparse’, to extract structured data from many resources.

All these tools, block explorers for on-chain data, social media aggregators, and scrapers for even more data, is a great OSINT workflow that makes it possible to detect threats and validate projects. Here a list with useful Crypto OSINT tools: Etherscan: https://etherscan.io – A blockchain explorer for Ethereum and ERC-20 tokens, used to view transaction histories, wallet balances, and smart contract details. BitInfoCharts: https://bitinfocharts.com – A multi-blockchain explorer for Bitcoin, Ethereum, and others, providing wallet richness, transaction volumes, and network metrics.

OSINT Framework: https://osintframework.com – A directory of free OSINT tools and resources, including crypto-specific tools for social media, forums, and blockchain analysis. DeFiLlama: https://defillama.com – Tracks Total Value Locked (TVL) and protocol metrics for DeFi projects across 150+ blockchains to assess legitimacy and adoption. CryptoMiso: https://cryptomiso.com – Ranks cryptocurrencies by GitHub development activity, focusing on commit frequency to gauge project health. BitcoinAbuse: https://www.bitcoinabuse.com – Tracks Bitcoin addresses linked to scams or fraud, helping users verify wallets before transactions. Blockchair: https://blockchair.com – A multi-blockchain explorer with advanced filtering for analyzing wallet patterns and tracing funds across 20+ blockchains. Dune Analytics: https://dune.com – Offers custom dashboards for blockchain data analysis and visualization, supporting Ethereum and other chains. BitcoinWho’sWho: https://bitcoinwhoswho.com – Tracks Bitcoin addresses and their online presence, linking wallets to websites or fraud reports. theHarvester: https://github.com/laramies/theHarvester – An open-source tool for gathering emails, domains, and subdomains linked to targets, useful for investigating phishing or fake project websites.

ScamAdviser: https://www.scamadviser.com – Evaluates website trustworthiness, providing trust scores to verify crypto exchanges or project websites. OSINTTracker: https://osintracker.com – Visualizes investigations by mapping connections across domains, emails, and crypto wallets. SpiderFoot: https://www.spiderfoot.net – An automated OSINT reconnaissance tool with 200+ modules for scanning crypto project domains, wallets, or social media.

• 5 Checklist & Routines

Checklist:

• Define OSINT in the crypto context for yourself, list three

ways it could potentially help you personally.

• Identify the key data sources that you will need for your

OSINT setup.

• Set up all those tools and start learning how to use them.

Routines:

• Daily: Spend 15 minutes daily on X, looking for crypto news

that could impact your general OpSec / OSINT setup.

• Weekly: Explore one new OSINT tool or data source.
• Monthly: Study the OSINT results of the last weeks and ask

yourself how you could refine your strategy.

Chapter 2: Researching Crypto Projects & Companies

Our industry is likely the most fast-paced and speculative one that mankind has ever seen; it sounds dramatic, yes, but I do mean it. While this was already the case in 2017, the year I joined this madhouse, it accelerated further and further. There are so many new projects every week, that no one can possibly keep up with everything that’s happening. Being able to research projects, companies and tokens in a proper way has become a critical skill for protecting your investments and avoiding scams; from fraudulent projects to overhyped tokens with no substance. OSINT enables you to evaluate a project’s / founder's legitimacy, assess its potential and stear clear of frauds. In this chapter we will look into the process of vetting new projects, how to identify red flags, tracking development activity, community sentiment, and more. If mastered, these techniques help you to make informed decisions and navigate the crazy world of cryptocurrencies with confidence.

2.1 Vetting New Projects

When you are vetting a new cryptocurrency / token and want to dig into its credibility, technical foundation and long-term viability, you will need a systematic approach. It all begins with analyzing foundational documents, researching the team members and checking the technical infrastructure to make sure the project aligns with its stated goals and has no big risks involved. The whitepaper of a project usually outlines the purpose, technology, tokenomics and a proper roadmap that shows the forecasted development, listing major milestones and when they will / might be reached. Reading whitepapers is not something many people like to do, however, it is essential to do when you take your research, thus your investments, seriously.

A legit whitepaper provides detailed technical documentation and explanations, supported by diagrams or mathematical models if necessary. If you read a whitepaper and it’s full of vague language / explanations and marketing jargon, or you are promised guaranteed returns on your investment, it’s a major red flag and you should put your guard up; legitimate projects will always prioritize clarity over hype. You can also go ahead and compare the whitepaper to those of already established projects, especially when you haven’t much experience with reading and analyzing whitepapers already. Moreover, verify any claims that are being made, i.e. partnerships or technological innovations. Once you are done with the whitepaper, continue with investigating the team behind the project, as their knowledge, experience and reputation influence the project’s success. Typically, the team member profiles will be available on the official website and LinkedIn; a team with verifiable experience in blockchain development and cryptography is always a good sign, but that alone doesn’t mean a project will be successful. It also doesn’t mean that anon teams are necessarily bad, as there are good reasons for staying anon, i.e. when it is a privacy-oriented project. Cross-reference all team member names, look for projects they were working with in the past, as this could reveal whether they are linked to any fraudulent ventures.

Examining the project’s GitHub repository offers insights

regarding its technical development, as long as it is open-source. What you want to see is an active repository with frequent commits, unique code (not copy/pasted or forked), detailed docs and contributions from community members, as this signals to you

that the project is led by a committed team. Ideally a project has also been audited by a smart contract auditor, often linked in the GitHub, so that users can confirm whether there are / were known vulnerabilities / patches. If it is a token-based project, check whether the token was already generated (TGE; Token Generation Event) – if not, inform yourself about a.) when it will take place, b.) what the different allocations look like and c.) how tokens from the team, investors, etc. do look like in detail. If the token already exists, verify the contract’s address before buying, review the contract itself, it’s transaction history and current token distribution, to reveal potentially concentrated ownership that could lead to price manipulation in the future.

After reviewing the whitepaper, the official documentation(s), the team members and investors as well as the smart contract code, you have already done more than 95% of all market participants – guaranteed.

2.2 Identifying Red Flags

No matter if rug pulls, pump-and-dump schemes or fake project teams, falling for those traps can be avoided by learning how to spot certain red flags. Rug Pull: A rug pull occurs when a project’s developer abandons it after raising funds, draining the liquidity and / or dumping tokens, leaving investors with worthless tokens; especially since the massive wave of meme tokens via Pump.Fun, big rug pulls are happening on a regular basis. Common indicators are a lack of locked liquidity, one of the first metrics you should have an eye on when considering buying into it. Also, check the token contract, as it often reveals suspicious functions, for example some that allow the developer to mint unlimited tokens or halt trading. A concentrated token supply, meaning a few wallets hold most of the tokens, visible in the contract’s holder list, suggests potential for a coordinated (pump-and-)dump. Monitoring developer wallets for large transfers to exchanges, using blockchain explorers, can signal an impending exit. Pump-And-Dump: Pump-and-dump schemes artificially inflate a token’s price through coordinated hype and bull posting, primarily on X and YouTube (there you will find the worst of the worst), with influencers and / or bots flooding the timeline with exaggerated claims about a token’s potential. Indicators for manipulation are

unnatural spikes in trading volume, while having a comparatively low liquidity. On CEXs you always have to watch for coins with low trading volume that are suddenly experiencing price spikes, most of the time combined with a surge in buy orders, without there being any fundamental news or active project developments. Check the order books for thin liquidity as well as unnatural buy walls that quickly disappear. On DEXs, monitor tokens with low liquidity pools, which can be exploited to create huge price swings; dexscreener.com is ideal for that purpose. Be in particular wary of tokens that have any paid promotions, disclosed or undisclosed, and that are making outlandish promises to their ‘investors’. Cross-check any project via available documentations, whitepapers and GitHub activity.

You can also use tools like TokenSniffer or RugDoc. TokenSniffer is a tool that analyzes token contracts for suspicious ownership and any malicious code, delivering individual reports. RugDoc can evaluate DeFi projects and deliver ‘risk scores’ which are based on the liquidity, audits and team information.

2.3 Tracking Development Activity

The least teams in this space are really committed to what they are doing, making hollow promises to their investors / users, but not keeping up to it. Tracking the development activity of a project helps you to differentiate between hot air and actual progress. GitHub is obviously the primary resource in this regard, as most projects have their repositories there, which reveal the frequency, type and quality of code commits. If a project has regular commits, detailed changelogs and active discussions in single issues, it indicates that you are dealing with a truthfully dedicated team; but if there are just sporadic updates, depending on market situation, or copied pieces of code, that’s rather a red flag. Also review the profiles of the contributors, to see if they are genuine with activity across different projects in the past or future; some projects are creating pseudonymous accounts just to inflate credibility.

2.4 Checklist

Checklist:

• Create your personal project vetting checklist.
• Identify red flags, create a list with the most common scam

indicators.

• Track the development via GitHub and roadmap updates of the

projects you are interested in.

• Research one project in-depth to get a bit more into the

process.

Chapter 3: Wallet and Transaction Analysis

Wallet and transaction analysis is essential when you want to be able to trace funds, understand behavioural patterns and link addresses to (real-world) identities. Every transaction leaves a trace, offering a wealth of data for those skilled in OSINT, data that just waits to be inspected; as long as we are not talking

about XMR and other 100% private-by-default cryptocurrencies that are obfuscating transaction data. In this chapter we will explore the techniques for tracing wallet activity, how to interpret wallet patterns, matching addresses with real-world identities and addressing the obstacles due to privacy-enhanced cryptocurrencies.

3.1 Tracing Wallet Activity

Tracing wallet activity on public blockchains provides you with important insights of fund flows, making it possible for you to monitor transactions, identify wallet interactions and thus detecting suspicious behaviour. Blockchain explorers that aggregate and display blockchain data are the primary tools for this task.

For Ethereum and EVM-compatible chains you can use Etherscan, allowing you to enter a wallet address in order to view its transaction history, token balances and interactions with smart contracts, including sender, recipient, amount, timestamp, gas fees paid and amount of block confirmations.

For Bitcoin, as well as various other blockchains, you can use Blockchair, which comes with similar functionality, and some advanced features like privacy scoring.

Monitoring wallets such as a project’s treasury or a suspected scam address delivers you real-time insights of new activity. A key aspect of tracing transactions is to reveal the intent of a wallet movement. A whale wallet sending funds to a known Binance or Coinbase address, labelled as such on many blockchain explorers, indicates that this entity wants to sell, while sending it from a CEX hot wallet to an already established cold wallet signals probable long-term holdings. In order to track interactions with DeFi protocols you have to examine the smart contract calls, visible in ‘Internal Transactions’, accessible via Etherscan. A wallet that’s interacting with the Unsiwap router contract indicates a token swap, while calls to i.e. Aave’s lending pool signals borrowing or staking activity. Always review contract addresses and cross-reference with the official docs to confirm that they are in fact legit contracts of the project; lots of phishing contracts out there that are mimicking original contracts to fleece gullible traders.

3.2 Understanding Wallet Patterns

No matter if it is about whale movements, arbitrage bots or sophisticated exploits, recognizing patterns in a wallets transaction history can reveal a lot if analysed in a proper way. Whale behaviour, meaning the transactions of an entity with significant holdings of a certain crypto-asset, gives often a hint in which direction a market will likely go in the short-term. A BTC whale transferring large amounts of Bitcoin to an exchange, visible through blockchain explorers like Blockchair, may precede a price drop, as it suggests that the whale wants to sell.

On the other hand, moving funds to a cold storage address, identified through its inactivity and high balance, indicates long-term holding. If you analyze whale wallets over time, you can also tell if movements are rather strategic or reactive. Arbitrage bots aim to exploit price differences across exchanges and can be identified by rapid, repetitive transactions, often involving small amounts across many different platforms. You can identify them via Etherscan, as you will see frequent interactions with DEX contracts (i.e. Uniswap or SushiSwap); also keep an eye on Miner Extractable Value (MEV) activity, the process of validators in blockchains like Ethereum gaining by manipulating the transaction order; front-running, back-running, liquidations and sandwich attacks in DeFi.

3.3 Linking Wallets to Identities

The pseudonymity of most blockchains enable you to tie wallet addresses to identities, and thus to identify (bad) actors behind transactions, or to assess general risks. It is a powerful process that requires some ethical restraint, at least when you plan to play it by the book and want to avoid privacy violations. A rich source for this purpose is X, as many people or projects often share wallet addresses in posts, AMAs or even their bios, tying them directly to their online presence; you would be surprised if you’d know what you will find some times by simply looking up a wallet address in the X search, or a regular search engine for that matter. Analyzing posting patterns, i.e. time zones and language, will narrow down the geographic location. While blockchain analysis tools are mostly enterprise-focused, i.e. Chainalysis Reactor offers a feature for the public, offering reports with detailed wallet behaviours in significant cases, providing you with a template for manual analysis. When using any

tool, make sure to do so via VPN to protect your privacy during your research.

3.4 Checklist & Routines

Checklist:

• Learn how to use a blockchain explorer to trace wallet

activity.

• Practice your wallet tracing skills by analyzing some random

wallet address from your favourite influencer and look for recurring transactions or behaviours; trace a sample transaction back to its origin.

• Document all your findings in an organized way.

Routines:

• Daily: Check a wallet that is of interest for you for unusual

activity.

• Weekly: Enhance your blockchain analysis skills by trying

them on a new chain that is unfamiliar to you.

• Monthly: Review your own wallets to identify potentially

traceable patterns and work on how to avoid them.

Chapter 4: Investigating Scams and Threats

As with any industry that involves a lot of money and sees

exponential growth, also the cryptocurrency industry, with its promise of financial freedom and decentralization, became a magnet for scams and threats that aim to exploit trust and technical inexperience. Malicious actors pose a constant risk to your assets and privacy, via phishing campaigns, SIM-swapping, hacks and data breaches. Investigating those threats through OSINT empowers you to identify scams, track perpetrators, assess platform vulnerabilities and overall to contribute to the safety of the whole community; and this is exactly what this chapter is all about.

4.1 Identifying Phishing and Scam Campaigns

Phishing, fake airdrops, impersonator accounts, malicious links and software to steal funds and / or sensitive information, there are many types of threats around that you need to be aware of if you don’t want to become part of the statistics.

Fake Airdrops: Fake airdrops promise you free tokens, because, well, who doesn’t like free stuff, am I right?! It is a very

common tactic until today, with many people losing their funds to the attackers. These campaigns often appear on X, Telegram and Discord, directing users to websites that look like legitimate projects (i.e. Uniswap) with the hope that the victim is connecting a wallet or enters a seed phrase. Whenever you see a new airdrop, the first thing you need to do is verifying its source. Check the project’s official website and social media channels and look if there is indeed an announcement for an upcoming airdrop, or not; genuine airdrops are very rarely unpublicized. Via WHOIS request you can check if the campaign’s domain is genuine, as it reveals registration details, like recent domain changes and the date the domain was registered.

If there is a WHOIS protection, but the original project is acting out in the open, you know that you stumbled upon a fake airdrop. In case you are unsure about your ‘findings’, don’t forget to check the X search, looking for entries re: [Project Name] + [Airdrop]. Impersonator Accounts: While fake airdrops are pretty easy to spot once you have some experience, social engineering in the form of impersonator accounts is an even bigger danger. Just recently a Bitcoin OG allegedly lost Bitcoin worth $300 Million in a highly sophisticated social engineering attack, an incredible amount. Impersonator accounts are usually posing as developers, influencers or support staff of exchanges, trying to trick users into clicking links or approving fraudulent transactions. On X, those accounts mimic verified profiles, using almost similar handles and profile pictures; always check the handle when you are getting approached via DM. On Discord there are many bots and ‘fake admins’ sending you direct messages. Here, you can simply disable DMs from users you aren’t friends with. In any case, if you have the slightest doubt regarding who you are really talking to, verify the identity through the official project channels. Never click any links in DMs / Emails that came from people where you can’t be sure who they are, in order to avoid phishing sites and malware; tools like ‘CheckShortURL’ help you to identify suspicious domains; entering the link in any search engine will also help to see if it is an already confirmed / reported scam. If you are sure that you found a scam that is not reported yet, do so yourself to protect others from potential harm.

4.2 Researching Exchange and Platform Risks

Unsurprisingly, centralized exchanges (CEXs) and decentralized exchanges (DEXs) are among the top targets for attacks, as they are critical infrastructure for trading crypto-assets; yet, there are widespread risks, such as hacks, insolvency or regulatory issues. That’s why it is essential that you are researching those platforms thoroughly, so that you choose reliable exchanges only to avoid catastrophic losses.

In order to do so, at least for CEXs, start with assessing their licensing and regulatory compliance. Reputable exchanges like Binance or Kraken disclose their licenses on their website and are verifiable through regulatory bodies like the U.S. FinCEN or the UK’s FCA. Compliance with anti-money laundering (AML) and Know Your Customer (KYC) standards shows that it is not a Tier3-Bucket Shop exchange, such as MEXC, to give an example. Researching the exchange’s team members shows if there is a certain degree of transparency, as well as if the team members are qualified to potentially be able to fulfil their claims and goals; for any exchange, team members that have a provable track record and experience in finance, business development and technology are essential. Also check user reviews and past security breaches; we in crypto tend to forget about things after a short time – who of you remembers for example the Kucoin hack in 2020? Right! When it comes to DEXs, such as Uniswap or PancakeSwap, things are a bit different, obviously, as they have no centralized oversight. Verify the code integrity of their smart contracts via Etherscan or BscScan, paired with potential audit reports, signaling a certain trustworthiness. I am writing ‘certain’, as no audit ever means that something is 100% safe. There is a vast difference between the audits of different auditing companies. Always cross-reference with other public information, mainly via X research. Research their financial health (liqudity pool sizes and trading volumes) via DeFiLlama – low liquidity always indicates a higher risk of manipulation. Also take a look at their governance; is the DEX controlled by a few wallets, or is it truly decentralized? By researching those risks you can be more assured of choosing a safe venue for your trading activities, protecting your assets and OpSec from failures.

4.3 Tracking Malicious Actors

Tracking grifters and crypto scammers is a meticulous process and starts with a detailed, comprehensive analysis of their on-chain behavior, as well as collaborating with other experts in the field, in order to raise the chances of tracking scumbags down. If you have an address that received stolen assets, you need to facilitate tools like the Blockchair block explorer, which offers a multi-chain search functionality, thus enabling you to trace the final destination(s) of these stolen assets. Where they funneled into a CEX? Obscure dark pool wallets? Any other endpoints that are frequently flagged by blockchain analytics services? What were historical transactions? When was the wallet initially created? Find out as much as you can and stay vigilant, set up automated alerts that will show you the wallet movements in real time.

But it is not everything about tracking single wallets, don’t forget to keep an eye on broader patterns of exploits, as they are providing a critical context / strategies deployed by the hackers. Always gain as much information as possible in order to be able to anticipate future threats. For example, flash loan attacks have been on the rise for a longer time already. They involve scammers who borrow huge amounts from protocols, without the needed collateral, to manipulate market prices. Those movements will always show up on-chain, large interactions with smart contracts followed by liquidation. By tracking the activities of malicious actors you are not just enhancing your OpSec you avoid interactions with tainted funds, or compromised entities that will simply take your funds – and, never forget, together we are stronger – collaboration is the way to put a stop to all the grifts out there!

4.4 Building a Threat Database

It is advisable to create your very own threat database in which you organize your OSINT findings and bundle it into a structured resource, cataloging scam wallet addresses, phishing domains, known fraudulent actors and other risks. It can be just for yourself, or you can do the right thing and share important findings with the community. Include:

• Scam addresses from exploits / hacks /… in the past,

featuring data from different sources / platforms

• Phishing domains that were identified by the community or

checking tools like PhishTank

• Social media accounts that were actively promoting phishing

URLs

• Domain registration details, but most of the time these

domains will be WHOIS-protected Store this data in an encrypted SQLite database and update it regularly to keep it current – if you built this, you have created a powerful tool for your future OpSec!

4.5 Checklist & Routines

Checklist:

• Create your personal scam identification checklist.
• Research an exchange (CEX or DEX) and check in particular

user reviews and past security incidents that might have occured.

• Track a known malicious actor to work on your OSINT skills.

Routines:

• Daily: Check your Emails and DMs for any messages that

contain a link and verify if they might be malicious.

• Weekly: Update your threat database with the help of new

reports from X or other channels.

Chapter 5: Advanced OSINT Techniques and Automation

Over the years, the cryptocurrency ecosystem has grown massively in complexity, making it essential to apply advanced OSINT techniques, in the best case automated, for efficiently processing huge datasets, uncovering insights, cross-referencing them and thus, staying ahead of threats. For most people, however, manual analysis should do the job, when we are talking about small budgets for investments and small-scale research of single projects; but you have to be aware that you might be struggling to keep pace when observing multiple projects for a longer time frame. If you want to take it up a notch, you need to leverage automation, visualization of data, real-time monitoring and, most importantly, learn continuously, to transform raw data into actionable intel. In this chapter we will explore some basic automating of OSINT workflows and how to visualize crypto data.

5.1 Automating OSINT Workflows

Streamlining the collection and analysis of cryptocurrency data via automating OSINT workflows is not a simple task, as you have to process blockchain data, market metrics as well as social media

insights fast, and with precision; facilitating APIs and scripts, you can build systems that scale, with a minimal manual effort. Services such as Etherscan and Coingecko provide real-time access to their data via API’s. The Etherscan API allows you to gather wallet balances, transaction histories and smart contract interactions; what one can do, for example, is to create a script that is always gathering the recent transactions of a specific wallet and flags large transfers to exchanges, indicating potential selling activity. With the Coingecko API you will get token prices, market caps, trading volumes for, well, every cryptocurrency that is out there, basically, useful to spot price anomalies or a token’s performance against direct competitors.

In order to access those APIs in a secure manner, it is imperative to safeguard all sensitive API keys by storing in variables, which are external configuration settings that are partitioned from the main codebase. You can further protect your keys using encryption, using a Python library like python-decouple, preventing accidental exposure of your credentials within public repos. You will also encounter the issue of APIs that are imposing rate limits, limiting the available requests for a specific user. For example, Etherscan is restricted to 5 requests per second, making throttling logic necessary to avoid temporary bans; when using Python, you can do that easily, by facilitating the function ‘time.sleep’, which will cause pauses between API calls. When it comes to blockchain analysis, you can design Python scripts to query specific ETH wallets, gather the transaction history via Etherscan API, calculate the net flow of funds over a custom period of time and potentially identify suspicious patterns. In the realm of social media analysis you can harness the X API (very expensive, not worth it for most), via Python and the ‘tweepy library’, or, if you want to scrape Reddit, the ‘PRAW Library’. Those scripts can extract user handles, content of posts, engagement metrics, thus delivering you valuable insights – automatically. To keep your OpSec at a high level you should consider running those scripts on a secure, Linux-based system, isolated from your primary device; but that depends a bit on what / from where you are scraping exactly. Any sensitive data should be stored in an encrypted SQLite database, a lightweight, separated database.

5.2 Visualizing Crypto Data

Visualizing cryptocurrency data is transforming the raw data you have gathered into more intuitive form, like graphs and maps, revealing connections (i.e. between wallets / wallet clusters), trends and generally critical insights that help you with your research, as well as investment and trading decisions. Tools like ‘Maltego’, ‘Dune Analytics’ and certain Python libraries can help you with those tasks, significantly growing your level of understanding of the crypto landscape.

‘Maltego’ offers some options to conduct cryptocurrency investigations, in order to investigate fraud, scams and wallet (cluster) analysis, via visualization of crypto transactions (BTC & ETH). With this, you can identify connections between wallets and entities; Maltego data is also used by other tools, i.e. by Crystal Intelligence. ‘Dune Analytics’ is another great tool, revealing the smart contracts of a specific project, liquidity pools and governance wallets; combined with API data, as we have talked about in the previous sub-chapter, you can use Python’s ‘matplotlib’ or ‘networkx’ libraries, in order to create graphs. The result is an intuitive overview of the whole project’s infrastructure.

By visualizing data you gathered, you might uncover hidden patterns and relationships, strengthening your OpSec and investment strategy with clear, actionable insights.

• 3 Real-Time Monitoring

Real-time monitoring of wallet activity, token prices and social media rumours regarding opportunities and threats can be automated via alerts and bots, both streamlining your processes:

• Wallet Activity: Facilitate alerts on blockchain explorers

like Etherscan and Blockchair; the Etherscan Watch List feature enables you to receive when a specific wallet executes a transaction, i.e. a large transfer to an exchange. Blockchair offers some advanced filters, allowing you to set up certain conditions, for example transactions that are exceeding a certain amount, making it a great solution to track whale wallets. Besides whale wallets, it’s obviously a way to monitor treasury wallets and (suspected) scam addresses, too.

• Cross-Referencing Alerts: When you are confronted with an

alert, you need to cross-reference it with on-chain data, i.e. contract interactions on DeFi protocols.

• Token Price Changes: These can be tracked by CoinGecko API,

facilitating a Python script that queries specific prices and triggers notifications if a token price reaches a certain level. Via ‘python-telegram-bot’ you will get instant updates; obviously you should create a fresh Telegram for this purpose that is not connected to anything else.

• Social Media: Activity on social media can also be tracked

with a Python bot, in this case you can use ‘tweepy’ to monitor specific keywords and scrape any post that includes them; make sure to filter by engagement or verified accounts to get rid of most of the spam that’s happening on X.

… stay ahead of the curve, anon!

5.4 Checklist & Routines

Checklist:

• Set up your own automated OSINT workflow, using tools like X

Pro as well as custom scripts to monitor specific keywords.

• Visualize crypto data that you are gathering, start small

with Excel and take it from there.

• Configure real-time alerts for any wallet that is of interest

for you.

• Experience with advanced OSINT tools for deeper analysis in

the future. Routines:

• Daily: Review all data that you have gathered automatically.
• Weekly: Refine one of your automation rules and / or

visualize a new data set; especially when you usually do not like to work with data.

Conclusion: Stay Ahead of the Curve!

The cryptocurrency landscape is evolving with rapid speed, new actors, new projects and protocols, new data sources, new threats – that’s our daily bread and butter, which makes it so important to stay ahead of the curve and be able to adapt, quickly. Following knowledgeable OSINT accounts in the crypto space provide you with expert insights, not just into threats, but also tools and specific techniques. Using a pseudonymous account via VPN, you can ask questions and / or validate your own findings without giving up your privacy.

Subscribing to blogs and newsletters, like from security firms (i.e. SlowMist; Chainalysis), will provide you with a constant stream of technical analyses of various blockchain vulnerabilities and OSINT workflows.

Always be curious, always explore new things – do more than others and be more safe than others. Simple as. You got this!