Ostium

What happened

• Ostium, a defi protocol, lost $23.8M on July 15, 2026.

• The 14th largest of the 306 incidents recorded in 2026 so far: 1.0% of the $2.34B lost to hacks that year.

• 3 other incidents were recorded the same day, the largest Cascade Liquidity Strategy ($1.3M).

• Private Key Compromised is behind 69 recorded incidents totalling $1.25B; this is the 8th largest of them.

Cite this record

Monitoring Room, "Ostium hack — $23.8M stolen", incident record, data: DefiLlama hacks dataset, as of 2026-10-23 04:36 UTC. https://monitoringroom.com/situation/crypto-hack/ostium

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