DeFiJul 16, 2026· 2 views

Ostium Suffers $18 Million Loss in DeFi Oracle Exploit

A perpetual exchange on Arbitrum lost $18 million after attackers compromised an oracle signer key to manipulate prices.

Ostium Suffers $18 Million Loss in DeFi Oracle Exploit
coinbeat.news

The decentralized exchange Ostium became the latest target for hackers this week. The incident resulted in a loss of approximately $18 million from the protocol. Security analysts confirmed that the breach originated from a compromised oracle signer key, which allowed bad actors to manipulate price data feeds.

By taking control of the feed, the attackers were able to drain funds from the perpetual exchange. This exploit highlights the ongoing risks associated with relying on external data providers to settle trades on decentralized platforms.

The team behind Ostium is currently investigating the breach to understand the full extent of the damage. Users should monitor official announcements for updates on potential recovery plans or security patches. This event serves as a reminder for traders to remain cautious when participating in newer decentralized finance protocols.

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