Cow Protocol halts trading after DNS hijack of its frontend domain at swap.cow.fi.

Cow Protocol's decentralized exchange aggregator, Cow Swap, paused its protocol on April 14, 2026, after attackers hijacked the DNS records of its main frontend domain, swap.cow.fi. The Cow DAO quickly halted the backend and APIs as a precaution, though no confirmed losses at the smart contract level have been reported. Users who interacted with the compromised frontend after the attack are advised to revoke wallet approvals immediately to prevent potential losses. The incident highlights ongoing risks of DNS hijacking in DeFi, but the protocol itself remains secure as it does not hold user funds directly. A full investigation and post-mortem report are expected once the issue is resolved.