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DeFi exploit wave 2026Update 23 of 24
Ostium Oracle Exploit: $23.75M

Ostium Exploit Confirmed at $23.75 Million Via False Oracle Prices; Platform Cooperates With Investigators

Perp DEXJul 19, 2026

A relentless wave of DeFi exploits—spanning smart contracts, bridges, oracles, and MEV bots—is draining hundreds of millions and pushing 2026 toward record hack losses.

Ostium confirmed the total losses from its perpetual DEX exploit reached $23.75 million, caused by the injection of false oracle prices that unlocked trader positions. The platform issued an incident update stating it is cooperating with multiple investigative parties and will provide 24 hours notice before resuming trading. The exploit originated from oracle price data compromise, while Ostium stated traders' collateral and positions were separately unaffected.

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