Ostium loses at least $24 million to oracle exploit

· Molly White · July 17, 2026, 8:31 p.m.
Summary
Ostium, a decentralized perpetual futures exchange, suffered a loss of at least $24 million due to an attack that exploited its oracle system. The attacker gained access to a private key used for signing oracle messages, allowing them to submit fraudulent future-dated reports and drain funds from the protocol, which were subsequently laundered via Tornado Cash.
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