# Ostium Lost $23.75 Million Through a Price Forwarder It Had Placed Outside Its Own Bug Bounty Scope

The attacker fed the vault a fake $60,000 bitcoin quote, and 10,540 of the 12,084 ether in proceeds entered Tornado Cash before the day ended.

- Published: 2026-08-10T05:51:49.058Z
- Canonical: https://polylog.news/crypto/2026-08-10/ostium-lost-23-75-million-through-a-price-forwarder-it-had-p
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Rekt News (Ostium)](https://www.rekt.news/), [DeFiHackLabs](https://github.com/SunWeb3Sec/DeFiHackLabs/commit/cca8b236f178ed4c9c19ba3d90ef2aa3ac476953), [DeFiHackLabs (governance timeout)](https://github.com/SunWeb3Sec/DeFiHackLabs/commit/36c3e5d3c4c4b2141c0cebd4b265be994f6bc54f), [Ethereum Research](https://ethresear.ch/t/coordination-collapse-and-the-optimality-of-silence-two-result-that-break-standard-bft-and-oracle-design/25674</source-url)

Ostium, a perpetual futures venue on Arbitrum, lost $23.75 million on 15 July 2026 to price manipulation delivered through its own authorized infrastructure. The protocol runs a pull oracle, meaning prices are written on-chain only when a t…

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