The Poly Network Hack Explained

**Poly Network cross-chain hack:** The report explains how an attacker exploited misconfigured smart-contract privileges and a 32-bit function selector collision between EthCrossChainManager and EthCrossChainData to register attacker-controlled keeper public keys and drain approximately $610M in multiple tokens from Poly's liquidity wallets; it also covers the immediate response (token freezes, requests to exchanges) and partial fund returns.