Balancer Loses $116 Million in Multi-Chain Exploit Targeting Wrapped ETH

Balancer suffered a security breach on November 3, 2025, resulting in approximately $116 million in losses across Ethereum, Arbitrum, Base, and Optimism networks. The attack exploited smart contract vulnerabilities to drain wrapped ETH from the decentralized exchange protocol. Ethereum's mainnet accounted for $91 million of the total losses, with the attacker's wallet identified holding multiple versions of unwrapped stolen assets.