# DeFi Loss Streak Continues as Oracle, Governance, and Signature Attacks Drain Tens of Millions in July

Ostium lost about $18 million to a compromised price oracle, BonkDAO around $20 million to a hidden governance clause, and Bonzo Finance roughly $9 million, part of a month running near $57 million in thefts.

- Published: 2026-07-25T05:44:17.130Z
- Canonical: https://polylog.news/crypto/2026-07-25/defi-loss-streak-continues-as-oracle-governance-and-signatur
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Rekt News](https://www.rekt.news/), [CoinDesk](https://www.coindesk.com/business/2026/07/15/ostium-suffers-usd18-million-exploit-as-oracle-attack-wave-continues-to-hit-defi), [Halborn](https://www.halborn.com/blog/post/explained-the-bonkdao-hack-july-2026)

July's decentralized-finance (DeFi) losses accumulated across three distinct attack vectors. The Arbitrum-based perpetuals exchange Ostium lost an estimated $18 million after an attacker obtained a private key belonging to one of its price…

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