zkLink Halts Nova Block Production and Withdrawals After Attack

zkLink said it halted block production on zkLink Nova and closed withdrawals after an ongoing attack targeting its Arbitrator contracts on Ethereum and Optimism, measures aimed at stopping further losses. The team is urgently repairing the affected contracts and conducting a security review of all related components. Withdrawals were shut temporarily to cut off another route for the attack, and block production will remain paused while the review continues. The team plans to restore services only after it verifies that all risks have been removed. About $786,000 has been lost in the attack.