Decentralized exchange Ostium was attacked, resulting in a loss of approximately 18 million dollars

The perpetual contract trading platform Ostium on Arbitrum is suspected to have been attacked, resulting in a loss of approximately 12 to 18 million USDC, accounting for about 35% of its over 34 million dollar treasury size.

The attacker allegedly compromised the oracle signer’s private key, utilized the registered PriceUpkeep relayer to submit favorable prices for future times, and looped opening and closing positions to deplete the treasury funds. Currently, Ostium officials have not responded.