AFX bridge lost $24.15M USDC after attacker exploited Arbitrum bridge and finalized withdrawal with 5 of 7 validator signatures.

AFX XYZ on Arbitrum exploited for $24M USDC; funds bridged to Ethereum and swapped into 12,467.5 ETH now at 0x6276...ebAC.

According to @PeckShieldAlert, Nemo Protocol on Sui Network was exploited for $2.4 million on Sep 8, 2025, with funds denominated in USDC, source: @PeckShieldAlert. According to @PeckShieldAlert, the attacker bridged USDC via Circle from Arbitrum to Ethereum following the incident, establishing a clear cross-chain path, source: @PeckShieldAlert. According to @PeckShieldAlert, the affected ecosystems and assets explicitly identified are Sui, Arbitrum, Ethereum, and USDC, which defines the networks and token involved in the outflow, source: @PeckShieldAlert.