Arbitrum RWA Platform Ostium Says July 15 Attack Caused Over $23.75 Million in Losses

Foresight News reported that Ostium, an RWA trading platform on Arbitrum, said the July 15 attack was caused by hackers breaching off-chain infrastructure tied to the protocol’s pricing system, with total losses exceeding $23.75 million. According to Foresight News, Ostium is working with Mandiant, zeroShadow, Collisionless, SEAL 911, and law enforcement, while coordinating with exchanges, bridges, and stablecoin issuers. Ostium said its engineering work is now focused on isolating and securing the necessary infrastructure to ensure a safe restart. The platform said it will give at least 24 hours’ notice before unfreezing the trading contract. After reopening, traders’ positions will be marked at the price at the time of reopening, regardless of price fluctuations during the outage.