HOW THE BIGGEST HACK IN HISTORY HAPPENED

Summary from the TLDR Web Dev newsletter

$1.4 billion was stolen from Bybit in a hack orchestrated by North Korea's Lazarus Group. Attackers manipulated the "operation" parameter in a Safe smart contract transaction to enable something called delegatecall, granting them control over Bybit's wallet through malicious contracts. The compromised transaction bypassed standard security checks by replacing the legitimate one in the signing interface, which then allowed unauthorized fund transfers.