Long-form. Technical. Every Wednesday. The things you already know you should be doing with your keys.
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Reentrancy keeps draining protocols decades after it was solved, because checks-effects-interactions is unglamorous discipline that builders skip until the exploit writes their postmortem for them.
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Governance tokens that gate voting power on a single snapshot block are perfectly happy to count borrowed votes as real votes, and flash loans make that borrowing free.
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Your pending transaction sits in a public mempool announcing exactly what you intend to do, and specialized bots parse, simulate, and profit from that intent before your trade ever confirms.
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The public ledger makes stealing crypto trivial and keeping it nearly impossible, which is why on-chain forensics turns every theft into a slow-motion chase across an immutable record that never forgets.
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Attackers rarely need your private key when they can corrupt the destination address between your intent and your clipboard, and this article maps the failure to MITRE ATT&CK and tells you how to stop feeding them.
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'Not your keys, not your coins' is a balance-sheet claim about an exchange's solvency you have no way to verify, and even Proof of Reserves only closes half the gap.
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Self-custody isn't a hardware wallet in a drawer, it's a key management program with a full lifecycle, and NIST SP 800-57 has been telling us how to run one for years.
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The exit scam is usually written into the token contract in plain Solidity before you ever hit buy, and reading it takes less time than the loss takes to hurt.
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A first-principles field manual on oracle manipulation, explaining why most DeFi exploits are not code bugs but protocols trusting a price an attacker controls, and how to source and validate price data correctly.
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Immutability is a marketing claim when a single upgrade key can silently swap out every line of a protocol's code, and most teams treat that key with less care than their production database password.
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Bridges concentrate enormous value behind a handful of keys and a small validator set, and this piece explains what secure cross-chain design actually requires and why nearly everyone ignores it.
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Buying a Safe multisig does nothing if one person controls the threshold; real security comes from independent signers, hardware diversity, and rehearsed recovery, not from the contract itself.
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A first-principles look at why blind-signing EIP-712 messages, especially token permits, remains the fastest way to lose a wallet, and how to actually read what you sign.
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Nobody brute-forces a BIP-39 seed phrase; they photograph it, sync it to the cloud, or paste it into a machine that was already compromised, and this article explains exactly where the leaks happen and how to stop them.
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Infinite token approvals are the quiet mechanism behind most drained wallets, and understanding EIP-20's allowance model is the difference between an inconvenience and a total loss.