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Wave of DeFi Exploits in July 2026
Multiple DeFi platforms suffered exploits in July 2026, including Ostium (est. $18-22M), DeFiTuna ($580K), and Cascade ($1.34M), highlighting ongoing security challenges in the ecosystem.
Heat
107
Confidence
95%
Evidence
7
Updated
Why It Happened
Attackers compromised oracle systems and lending pools, exploiting vulnerabilities in components previously considered trusted and not covered by bug bounty programs.
Outcome So Far
Funds drained; trading paused on Ostium; teams investigating and attempting recovery; some funds laundered through Tornado Cash.
Actors
OstiumTrade real-world assets on-chainOstium is a synthetic asset protocol that enables institutional and retail traders and hedgers to gain exposure to commodities on-chain.
DeFitunaLeveraged liquidity market making on SolanaDefiTuna is a decentralized finance (DeFi) platform offering concentrated liquidity market making (CLMM) with leveraged positions. DefiTuna allows users to open positions with leverage. Initially, we will support some of the most liquid pairs but later we plan on expanding to a more permission-less approach.
CACascadevictim protocol
Timeline order
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Parent event 02
#PeckShieldAlert The @Ostium public OLP vault has been drained of ~$24M $USDC. The exploiter sw…
#PeckShieldAlert The @Ostium public OLP vault has been drained of ~$24M $USDC. The exploiter swapped it for 12.08K $ETH and has deposited 10,540 $ETH to #TornadoCash so far. The exploiter originally funded Wallet 0x321D...8bfD9 with 1 ETH from #ChangeNow and …
Related posts@DeFiTuna@Rifat_EE@PeckShieldAlert4 posts
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Parent event 03
X conversation update
1 related posts from @cascade_xyz
Related posts@cascade_xyz
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Parent event 04
Ostium exploit of $18-22M
Ostium perpetual DEX paused trading after an estimated $18-22M USDC exploit. Attacker compromised part of the oracle system and submitted future-dated price updates.
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