No smart contract hack was needed. A single blockchain reorganization could bring cross-chain operations to a halt. According to reports on November 1, THORChain temporarily halted swaps on 12 of its 13 supported chains following an incident related to an Ethereum reorganization. Reports indicate the protocol refunded 10 ETH twice. Why is this significant? Blockchains can reorganize blocks before transactions reach sufficient finality. If a cross-chain protocol processes a transaction too early, the data it relies on may change. For cross-chain protocols, this is a difficult balancing act: • Waiting longer for transaction confirmation can slow down user experience. • Confirming too early can create financial risk. • Halting operations limits damage but also impacts liquidity and users. Crucially: current reports do not mean Ethereum was hacked. The issue lies in how the cross-chain protocol handles reorgs and transaction confirmation. Lesson for DeFi users: when choosing a bridge or cross-chain protocol, don’t just look at fees and speed. Understand how the protocol handles non-finalized transactions, refund errors, and emergency scenarios. Cross-chain isn’t just about moving assets between chains—it’s about trusting how they verify truth. #DeFi #Ethereum #CrossChain #Web3