Positions will be marked to the live market price at reopen, and new OLP liquidity-provider deposits stay paused as the protocol works through recovery.

Blockchain security firm PeckShield now puts the drain on Arbitrum perpetuals protocol Ostium at roughly $24M, above the up-to-$18M first estimated.

Blockaid says an attacker used a registered price-feed forwarder and future-dated oracle reports to book fake trading profits, in the latest exploit to target the automated infrastructure DeFi protocols lean on for pricing.