zkLink Nova halts block production and withdrawals after bridge exploit
- —SlowMist estimates losses at $783,100; Blockaid puts them at $786,000
- —The attack targeted Arbitrator contracts on Ethereum and Optimism
- —Attacker reused a valid message hash and forged proofs to approve withdrawals
- —zkLink had offered a 20% white-hat bounty
Why it matters: The incident highlights cross-chain bridge exposure to forged batch roots, with zkLink Nova still halted and no restart date announced.
Source: TokenPost