Binance Lost $6.3 Billion to Its Own Signing Machine

This story was originally published on HackerNoon at: https://hackernoon.com/binance-lost-$63-billion-to-its-own-signing-machine. Binance lost $6.3B with no private key leaked. How a DevOps laptop and EIP-7702 turned the exchange's own signer against it. Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity. You can also check exclusive content about #cybersecurity, #blockchain-security, #binance, #eip-7702, #binance-hack, #binance-hack-6.3-billion, #binance-hot-wallet-signing, #eip7702-phishing, and more. This story was written by: @sidrazafar. Learn more about this writer by checking @sidrazafar's about page, and for more stories, please visit hackernoon.com. On 29 October, an attacker moved about $6.36 billion out of Binance hot wallets on ten blockchains, most of it in roughly 20 minutes. Every transaction carried a valid signature. Here's how a DevOps laptop and Ethereum's EIP-7702 turned Binance's own signer against it, and what custodians should fix this week.