Binance initially stated that the $6.3 billion attack involved a compromised DevOps engineer's laptop, but later investigation revealed additional points of breach in its hot wallet signing infrastructure

From the articleBinance Hack Drains $6 Billion, FBI and Secret Service Launch InvestigationAlso in Binance $6.3B Hack Raises Questions Over Ethereum EIP-7702, Binance's $6.3 billion hack: What we know and what comes next, Binance Pegs Hot-Wallet Losses at $6.3 Billion, Vows to Cover Them as TRM Points to North Korea - Unchained, TRM and Chainalysis Tie $6.4B Binance Hack to North Korea's TraderTraitor - Decrypt, Binance Finds 'Additional Points of Breach' in $6.3B Hack - Decrypt