
Why One Infected Laptop Led to the Largest Hack in History
On October 29 at 4:00 PM Eastern Time, North Korean hackers made off with $6.3 billion from Binance – the largest hack ever, not just in crypto. Fortunately, about half was frozen, but the incident remains unprecedented.
How the Hack Unfolded- An infected developer laptop was the entry point. 9 out of 10 major attacks in the last three years started this way.
- The hackers gained access to a service container that could sign transactions – like having access to a pen in a bank that issues checks.
- They pre-signed 50 transactions with different nonces and used one to convert the hot wallet into a smart wallet (via EIP-7702).
- From there, they drained all assets while new deposits kept flowing in and were instantly stolen.
- EIP-7702 allows a regular crypto wallet (EOA) to temporarily borrow a smart contract's code.
- The hackers used it to drain all assets in one transaction – more efficient, but not the root cause.
- The hack would have happened with or without EIP-7702; it just sped things up.
- This hack is a story about operational security, malware, and likely social engineering.
- New features like EIP-7702 expand the attack surface, but the core failure was inadequate protection of signing capabilities.
- The community must learn from this to prevent future attacks.
Listen to the full conversation on the podcast 'Unchained' with Laura Shin – live every Monday and Thursday.





