Ostium Investigates $23.75M USDC Theft, Cites Compromised Off-Chain Infrastructure
Ostium said attackers stole $23.75 million in USDC from the platform in a July exploit, describing it as the result of an off-chain infrastructure compromise rather than a smart-contract or multisig failure [1] [2].
According to Ostium’s investigation, the breach involved compromised off-chain systems that generated fraudulent BTC-USD price reports, which led to artificial profits and the draining of $23.75 million USDC from the OLP vault; Ostium said monitoring later stopped further withdrawals while it migrated production systems and strengthened controls [3] [4].
Ostium concluded the incident was driven by compromised off-chain infrastructure and said it is carrying out remediation, including security upgrades and a recovery plan for liquidity providers [3].
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Sources
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- 1Ostium Says 23.75M USDC Was Stolen in Off-Chain Breachcoincu• Jul 30, 2026
- 2Ostium blames off chain breach for $23.75M USDC exploitcrypto.news• Jul 30, 2026
- 3Ostium Says $23.75M Exploit Stemmed From Off-Chain Infrastructure Breach36Crypto• Jul 30, 2026
- 4Ostium Identifies Off-Chain Breach Behind $23.75M USDC ExploitMoneyCheck• Jul 30, 2026
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