CoW Swap, a decentralized trading interface, said on Tuesday that it has temporarily stopped its services after detecting a domain name system (DNS) hijacking incident that affected its website, underscoring the current security risks at the front-end layer of DeFi platforms.
In a post on X, the team said the attack occurred at 14:54 UTC and warned users to avoid interacting with its interface until further notice. While the protocol’s underlying infrastructure, including its backend and API, was not directly compromised, both were paused “as a precaution” while the team worked to resolve the issue.
DNS hijacking allows attackers to redirect users from a legitimate domain to a malicious lookalike site, often with the goal of emptying crypto wallets or collecting private data. The attack vector has become a persistent weakness in decentralized finance, where users often rely on web-based interfaces to access otherwise secure smart contracts.
CoW Swap operates as a decentralized exchange aggregator, sourcing liquidity across venues and using a mechanism known as “Wish Matching” to match transactions directly between users or pool them for more efficient execution. Orders are handled by competing “solvers” who optimize trading results, a design intended to reduce slippage and limit exposure to maximum extractable value (MEV).
MEV is a practice in blockchain where robots reorder transactions to make a profit at the expense of users, making mitigation key to ensuring fair prices and protecting traders.
The platform is governed by the CoW DAO, a decentralized autonomous organization derived from the Gnosis ecosystem. The project has positioned itself as a user protection alternative in DeFi trading, emphasizing quality of execution and fairer trading results.
“We are now actively working to resolve the situation. Please continue to refrain from using swap dot cow dot fi until we confirm that it is safe to use,” the team wrote on X.
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