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Ostium exploiter routes 10,540 ETH through Tornado Cash

PeckShield revised the Ostium vault drain to about $24M in USDC, up from an earlier estimate of roughly $18M.

Reported · Written up by our desk · Market Structure

Blockchain security firm PeckShield said the exploiter behind Ostium, a real-world-asset perpetuals protocol on Arbitrum, has moved 10,540 ETH to Tornado Cash. PeckShield said Ostium's public OLP vault was drained of about $24M in USDC.

PeckShield reported that the attacker swapped the stolen stablecoins for 12.08K ETH and had deposited 10,540 ETH to Tornado Cash, suggesting laundering was still ongoing. The updated $24M figure is higher than an up-to-$18M estimate that was made when the exploit first surfaced.

PeckShield said the revised total reflects continued tracing of the drained funds rather than a separate incident. The firm also described how the exploiter originally funded the wallet using 1 ETH each from ChangeNow and Bybit.

Ostium halted trading after an oracle exploit drained the vault, according to The Defiant. PeckShield said Ostium had total value locked of $37.80 million, all on Arbitrum, citing DefiLlama data.

Latest closeEthereum $1,872.43 ▼2.3%

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