Ostium2026-07-17 05:32:11Ostium hit by oracle report exploit as five-minute incident drains up to $24 millionOnchain perpetuals platform Ostium said a five-minute security incident hit its public Ostium Liquidity Provider, or OLP, vault on July 15 between 14:18 and 14:23 UTC. Third-party security firms said the issue was not a missing signature. Instead, they said a registered PriceUpKeep forwarder submitted authorized oracle reports carrying future timestamps, which then generated false trading profits. Public loss estimates vary. Blockaid put the payout near $18 million, Cyvers estimated $23.7 million, and PeckShield later said about $24 million had been drained. SlowMist cited a lower figure of $11.86 million, apparently based on a visible vault outflow of 11,862,444.782 USDC in a referenced transaction. Ostium co-founder Kaledora Kiernan-Linn said the team detected the issue within minutes and coordinated a trading pause within an hour. She also said the protocol is working with law enforcement, SEAL 911, and outside security experts. Ostium has not yet published a final loss total, root-cause analysis, or post-mortem report. The case differs from Bonzo Lend’s recent Hedera incident, where the validator reportedly accepted a proof without a valid signature. In Ostium’s case, security firms said authentication passed, but the data itself was unsafe.1470
Ostium2026-07-15 15:26:01Ostium confirms OLP vault issue and halts all tradingOstium has confirmed an issue affecting its OLP vault and said all trading on the platform has been suspended while the team investigates. The update came after the Arbitrum-based RWA perpetuals trading platform was reportedly attacked earlier. Estimated losses from the incident stand at $18 million. The announcement was disclosed by Ostium through an official statement cited by BlockBeats on July 15. No further details on the cause of the vault issue or a timeline for resuming trading were provided in the notice. For now, the platform remains under investigation as the team looks into the incident and its impact.1800
