Ostium suffers $18 million exploit as oracle attack wave continues to hit DeFi
Covered by 5 sources · 5 articles
5 outlets - including Coinedition, Coin-turk and Decrypt and 2 more - are covering this story. Ostium, a decentralized perpetual exchange on Arbitrum, experienced a major security breach that resulted in the loss of approximately $18 million USDC. Blockchain security firm Blockaid flagged the incident on 15 July 2026, stating that a…
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Ostium Vault Suffers $18 Million Exploit on Arbitrum via Oracle Attack
Ostium, a decentralized perpetual exchange on Arbitrum, experienced a major security breach that resulted in the loss of approximately $18 million USDC. Blockchain security firm Blockaid flagged the incident on 15 July 2026, stating that a…
Ostium exploited in $18 million oracle attack using protocol’s own infrastructure
🚨 Ostium loses $18 million in USDC after a sophisticated oracle manipulation exploit. 🟧 The attacker used future-dated price reports to drain funds from the protocol’s vault. 💱 Ostium lets users trade real-world assets like gold and fore…
Another DeFi Exploit: Perp DEX Ostium Loses $18 Million in Oracle Attack
Hackers manipulated Ostium's price feed by compromising an oracle signer key, allowing them to drain roughly $18 million from the Arbitrum-based perpetuals exchange.
Ostium suffers $18 million exploit as oracle attack wave continues to hit DeFi
A hacker used Ostium's own price-reporting infrastructure against the protocol, submitting falsified future-dated oracle data to manufacture fake trading profits and trigger an $18 million payout.
Ostium Perp DEX Hit for $18 Million in Brutal Oracle Exploit
Arbitrum’s RWA perpetual platform Ostium lost nearly $18 million USDC today after attackers compromised an oracle signer key and manipulated prices. The root cause was a compromised oracle signer private key. This allowed the attacker to by…