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 bypass verification checks and submit favorable future prices. They executed around 20 looped trades through delegated actions, instantly profiting