Ostium DeFi Perpetuals Exchange Loses $11.86M in Oracle Exploit
Ostium, a perpetuals exchange for real-world assets backed by General Catalyst and Jump Crypto, lost $11.86 million in USDC from its Arbitrum trading contracts on July 15, 2026, after an attacker exploited a vulnerability in the platform’s price oracle system. The exploit exposed a critical gap in how off-chain price data is validated on-chain, marking…