On-chain Safety Education
Plain-English guides 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.
Fake airdrop claim sites drained $494M from users in 2024 alone. We take apart the biggest operations — Inferno Drainer's 16,000-domain network, the $1.25M Polygon NFT airdrop phishing wave, and the Cointelegraph pop-up attack — to show the machine behind the losses.
Crypto transactions can't be reversed — yet law enforcement has recovered billions in stolen crypto. Here's the actual recovery pipeline, real cases, and what victims should do in the first 48 hours.
A step-by-step claim workflow that survives fake sites and hijacked channels: verify the announcement independently, decide the URL before the frenzy, claim with a dedicated wallet, read the signature, then revoke approvals after. The habits, in order of leverage.
Every airdrop safety check from our series in one printable list — source verification, URL discipline, contract inspection, signature reading, wallet isolation, and post-claim cleanup. Run it top to bottom; any single failed check is a stop.
Ethereum's Pectra upgrade gave EOAs optional contract code via EIP-7702 delegation — and drainer kits adopted it within weeks. The first documented victim lost about $147,000 to a single malicious 7702 batched transaction in May 2025. How the delegation attack works, how it appears in your wallet, and why claim pages are the main delivery vector.
Testnet airdrop farming is the cheapest retroactive airdrop strategy — and scammers know it. Here's how testnet drainers differ from mainnet ones, which risks are real (fake testnet sites, seed phrase harvesters, mainnet contract bait-and-switch), and a safe workflow for every testnet season.
A few terms to get you going — the full glossary has 220+.
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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