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The Polylog Crypto Intelligence Brief

Morning Edition · Saturday, July 25, 2026Published at 1:44 AM EDT · New York

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.

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

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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Bridge and Mint Exploits Sustain Heavy DeFi Losses

Over 3-6 months, recurring bridge proof-validation and unauthorized-mint exploits keep monthly DeFi losses elevated, including drains of deprecated contracts.