Web3 Security

Access control flaws

Chapter 4 of 4 · Web3 Security 100%

🔑 Three Parity multisigs. One missing modifier. $30M gone in an afternoon.

July 19, 2017. Parity's initWallet stayed callable after deployment. An attacker called it, became owner of three multisigs, and walked off with $30M. One missing access check, three protocols drained. 💀

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