On-chain Safety Education
Onchain Diary is an independent Web3 safety education site: 85 deep-dive articles and a 223-term glossary on crypto scams, smart contract security, and on-chain analysis. No jargon. No sign-up. No tools to install. Just the knowledge you need to stop getting rekt.
Guides, tutorials, and deep dives.
Stolen funds usually end their trail in a privacy layer. How mixers, Zcash shielded pools, and viewing keys change crypto fund tracing, and what victims can still realistically do.
A privacy-branded crypto project claimed its identities were encrypted. The page source told a different story. Here is the three-step check anyone can run before trusting a privacy claim.
Infostealers grab browser cookies, saved passwords, and wallet vaults in seconds. The full crypto kill chain, the 2025 takedowns, and the defenses that work.
Your wallet was drained or your exchange account emptied. What you do in the next 24 hours decides whether the theft is survivable: triage the intrusion type, secure remaining assets in the right order, build the evidence package, and get freeze requests out before funds reach a mixer.
Real airdrop snapshots record on-chain state at a block height — no action from you, ever. Scam campaigns invert that mechanic with countdown timers and 'verify your wallet' pages riding real project announcements. How snapshots actually work, the deadline-pressure playbook, zombie campaigns that outlive their projects, and the rule that eligibility can always be checked without connecting a wallet.
Hardware wallets are sold as the safest way to store crypto — until the purchase itself becomes the attack. Here are the six scam patterns, real cases, and a buy-side checklist.
Reading is half. The other half is recall.
Every question is drawn strictly from the Yellow Paper's own text. No outside knowledge required — if you've read it, you can pass it.
Take the quiz → T-02Sixteen scenario questions sort you into one of sixteen security personas — hunter or prey — with a safety index and a shareable result card.
Find your type →A few terms to get you going — the full glossary has 223+.
Whether you're new to crypto or deep into DeFi, understanding how scams work is the best defense. Every guide here is free.
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