Crypto

CoinDesk @CoinDesk · 2026-07-23

Arbitrum-based AFX Trade drained of $24 million after bridge keys compromised

Security firms said the attacker used enough hot-validator signatures to approve a 24.15 million USDC withdrawal, while Arbitrum said its native bridge was not affected.

Quick take

AFX Trade, a decentralized exchange on Arbitrum, was drained of $24.15 million in USDC after an attacker compromised bridge validator signing keys. The stolen funds were moved to Ethereum and swapped for 12,467 ETH. Arbitrum's native bridge was not affected, according to Steven Goldfeder, co-founder of Offchain Labs.

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