Blockaid Alerts: Cow Swap Frontend Hijack Sparks DeFi Panic!

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In a move that would cause even the most stoic android to blink, Blockaid flags CoW Swap’s cow.fi frontend as malicious, urging users to revoke token approvals and steer clear of the dApp amid a spreading storm of DeFi interface attacks.

Blockaid’s system has identified a front-end attack on @CoWSwap.

The site cow[.]fi has been flagged as malicious.

Avoid any interactions with the dApp immediately.

– Blockaid (@blockaid_) April 14, 2026

Blockaid’s warning joins the expanding parade of DeFi frontend hijacks

Blockaid’s latest alert comes amid a surge in so‑called frontend hijacks, where attackers compromise a project’s website or DNS rather than its on‑chain contracts, silently swapping legitimate transaction prompts for malicious ones that drain user wallets.

In February, Blockaid flagged a similar frontend attack on the tokenization platform OpenEden, warning users to refrain from signing transactions and avoid interacting with the dApp until the issue is resolved, while other incidents have lately knocked at the doors of Curvance and Maple Finance.

As CoW Swap’s own DeFi security guides remind us, these attacks target “people, devices, and transaction behavior” rather than merely attacking code, making the mundane hygiene of checking URLs, bookmarking the correct site, and minding token approvals more essential than ever for both the casual user and the professional who should know better.

Security outfits like Kerberus and those Revoke‑style tools advise regular audits and revocation of token approvals after any suspected incident, noting that revocation “only removes future permission for that contract to move your tokens” and cannot recover funds that have already slipped away.

For DeFi traders, the CoW Swap incident reinforces a recurring moral from crypto news: even if the smart contracts survive their audits with flying colours, a single compromised frontend can turn a routine swap into a wallet‑devouring disaster if someone signs without reading the script.

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2026-04-14 20:44