TheBlock
AFX Trade, a protocol on Arbitrum, suffered an exploit that drained roughly $24.15 million in USDC, according to on-chain investigator Blockaid. The attacker bridged the stolen funds from Arbitrum to Ethereum and swapped them into 12,467 ETH, per a separate flag from PeckShield.
Why it matters
The drain follows a familiar pattern in 2025's DeFi exploit cycle: hit a liquidity or bridge-related contract, move the proceeds across chains to a venue with deeper exit liquidity, then swap into ETH. The ETH conversion is a tell that the attacker is preparing for a longer laundering path rather than an immediate cash-out, since native ETH is easier to route through mixers and OTC desks than a stablecoin pegged to a frozen issuer.
Market impact
The USDC side of the loss is what limits contagion: there is no native token collapse on a chart, no liquidation cascade, and no protocol revenue line that bleeds through to a major token. The real read is on Arbitrum-native DeFi trust, where bridges and cross-chain liquidity venues have repeatedly been the soft underbelly, and on USDC issuer Circle, which now has another freeze-and-recovery question to manage rather than a hard redemption shortfall.
Frequently asked questions
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What happened in the AFX Trade exploit?
AFX Trade, a protocol on Arbitrum, was exploited for roughly $24.15 million in USDC, according to on-chain investigator Blockaid.
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How much was drained and in what asset?
About $24.15 million in USDC was drained. PeckShield flagged that the attacker bridged the funds from Arbitrum to Ethereum and swapped them for 12,467 ETH.
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Who is investigating the AFX Trade hack?
Blockaid reported the exploit and PeckShield tracked the cross-chain movement of the stolen funds from Arbitrum to Ethereum.
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Why did the attacker swap USDC for ETH?
Native ETH is easier to route through mixers and OTC desks than a stablecoin that a centralized issuer can attempt to freeze, so the swap is typically a precursor to a longer laundering path.
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Is there contagion risk to Arbitrum or USDC holders?
There is no native token chart collapse and no Circle redemption shortfall, so direct contagion is limited. The bigger read is on Arbitrum-native DeFi trust, where bridges have repeatedly been the weak point.
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