# DeFi Loses Roughly 35 Million Dollars in July to Oracle and Governance Attacks as an Executive's Account Is Hijacked

Oracle-key and price-feed manipulation took funds from Ostium and Bonzo Lend, a governance vote stole from BonkDAO, and Robinhood chief Vlad Tenev's account was used to promote a fake token.

- Published: 2026-07-24T05:23:58.626Z
- Canonical: https://polylog.news/crypto/2026-07-24/defi-loses-roughly-35-million-dollars-in-july-to-oracle-and
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [CoinDesk (Tenev)](https://www.coindesk.com/business/2026/07/23/robinhood-ceo-vlad-tenev-s-x-account-hacked-to-promote-token-amid-memecoin-frenzy), [Rekt News](https://www.rekt.news/), [CoinDesk (Ostium)](https://www.coindesk.com/business/2026/07/15/ostium-suffers-usd18-million-exploit-as-oracle-attack-wave-continues-to-hit-defi)

July's on-chain losses cluster around price and vote manipulation rather than raw code bugs. The perpetual-futures exchange Ostium, built on Arbitrum, lost about 23.75 million dollars after an attacker used a compromised oracle signer key a…

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