Morning Edition · Thursday, August 6, 2026Published at 1:33 AM EDT · New York
Oracle Key Compromise and an Account-Delegation Bug Lead the Week's Exploit Files
Ostium's post-mortem confirmed a $23.75 million vault loss from fake signed price reports, while new proof-of-concept code documents a token drained through Ethereum's account-delegation feature.

The most expensive incident in this group did not involve a contract bug at all. Ostium, a perpetual futures venue on Arbitrum, lost 23,752,746 USD Coin from its liquidity vault after an attacker obtained the private key of an off-chain pri…
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Part of a tracked trend
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.
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