Balancer v2 Exploit Use $117M Comot Because BatchSwap Rounding Error
Balancer v2 exploit don drain $117 million from Composable Stable Pools for Ethereum, Arbitrum, Avalanche, Optimism, Polygon, Gnosis, Base, Berachain and Sonic. Di attack exploit di rounding error for di EXACT_OUT mode of di batchSwap upscale function, weh allow di attackers for bypass di minimum supply checks. Balancer pause di vulnerable v6 pools wit Recovery Mode, as v5 pools still dey risk till dem intervene.
For di Balancer v2 exploit, white-hat groups and security teams don recover over $21 million so far. StakeWise reclaim 5,041 osETH and 13,495 osGNO. Base MEV and BitFinding secure about $750,000. Monerium freeze €1.3 million in EURe. Berachain start emergency hard fork to fully restore di $12.8 million loss. Sonic and other chains freeze attacker addresses. Balancer v3 no get any effect.
Dis incident show di risk wey dey come with smart contract rounding errors inside DeFi protocols. Traders suppose avoid di affected pools, dey monitor security updates and audits, and prefer protocols wey get proven real-time monitoring and cross-chain recovery frameworks.
Bearish
For short term, di Balancer v2 exploit spoil confidence for di protocol and di token wey dey related, e fit make BAL price dey go down as traders dey leave their position and no want enter v2 pools, wey go cause sell pressure. But if quick action dey, Berachain pay back everything, plus Balancer v3 no get wahala, e fit make people begin dey trust again for long term once dem reinforce security.