Gravity Bridge Halts After $5.4M Key Compromise Drains ETH and USDC

On June 1 Gravity Bridge remained halted following the May 30 signing-key compromise that drained roughly $5.4 million, including 274 ETH and $4.3 million USDC. The attacker retains about 2,102 ETH while laundering proceeds through ChangeNow and Binance. The breach follows Aave’s May 31 post-mortem on the April rsETH forgery and a separate HongCoin white-hat recovery, underscoring ongoing cross-chain custody risks for ETH flows and prompting renewed validator and regulatory scrutiny.