Ether.fi Hardens weETH Security Across 20 Chains After $292M rsETH Exploit

Ether.fi has deployed protocol-wide security upgrades to weETH bridges on 20 chains—including message library pinning, 4/4 DVN verification thresholds, and per-route rate limits—following a $292 million rsETH exploit via forged cross-chain message on April 18. Building on its April 28 announcement to deprecate bridging on eight low-usage chains (Scroll, Swell, Bera, zkSync, Mode, Blast, Morph, Sonic) by June 30, 2026, with a 0.5 weETH manual recovery fee, the moves address single-provider risks amid $5.1B TVL on Ethereum vs. $183M on OP Mainnet. Ether.fi contributed 5,000 ETH to DeFi United and is evaluating Chainlink CCIP and Wormhole for diversified bridging to curb cross-chain vulnerabilities.