Ankr Ethereum Bridge Loses More Than $303,000 in Five-Transaction Exploit

Ankr's Ethereum bridge lost over $303,000 across five transactions after its contract remained unpaused despite withdrawals referencing a small Optimism deposit that had already been redeemed. The exploit drained funds from the bridge, which connects Ethereum to networks including Optimism, by allowing repeated claims against the same deposit. The incident adds to a growing tally of bridge hacks, which remain among the largest sources of losses in decentralized finance because pooled liquidity makes them high-value targets. Watch for Ankr's post-mortem and any reimbursement plan, plus whether the bridge's pause and validation logic is tightened to prevent duplicate redemption claims.