![A circle overlaid with ][ symbols, followed by "Ostium" in orange capitals](https://primary-cdn.web3isgoinggreat.com/entryImages/logos/resized/ostium_300.webp)
The attacker siphoned at least $24 million USDC from the protocol, which they quickly swapped into ETH and laundered via Tornado Cash.
Ostium loses at least $24 million to oracle exploit
Decentralized perpetual futures exchange Ostium was drained of at least $24 million after an attacker manipulated its oracle system — a system that pulls in off-chain price data. After the attacker apparently gained access to the private key used to sign oracle messages, they were able to submit future-dated oracle reports that tricked the system into thinking trades were profitable.