How to Understand a Smart Contract Hack
summary
Focuses on how to reverse-engineer a DeFi exploit by reading the execution trace to find the first weird state change, then mapping the attack contract, victim contract and flow of funds to isolate the vulnerability (often re-entrancy or a state-machine bug). Recommends tools like ethtx.info and forking locally with eth‑brownie to replay the attack; prioritizes hacks >$1M on Ethereum mainnet as learning cases and emphasizes checking your own code for the same failure modes immediately.
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