Crypto Exchanges

Story: Cetus Crypto Exchange Loses $223 Million in Major DeFi Security Breach

By Dan Saada

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Cetus, a rising star in the decentralized finance (DeFi) space, has confirmed it suffered a devastating exploit resulting in the loss of approximately $223 million in user funds.

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The platform, built on the Sui blockchain, was forced to suspend operations as engineers scrambled to contain the breach and assess the damage.

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“We took immediate action to lock our contract and prevent further outflows,” Cetus wrote on X (formerly Twitter).

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So far, the team claims to have frozen $162 million of the compromised funds, though specific details on how those assets were “paused” remain murky.

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Blockchain analysts were quick to trace suspicious transactions following the initial alarm.

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Cetus has  a formal investigation in collaboration with the Sui Foundation and external cybersecurity experts.

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An exploit in Cetus’ smart contract protocol

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A sophisticated price manipulation scheme that drained liquidity pools without triggering alarms

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In the absence of a full post-mortem, speculation has surged on social media. Some Cetus community members highlighted potential code weaknesses that had previously been flagged…

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A detailed breakdown of the breach is expected from Cetus in the coming days.

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Cetus isn’t alone. This breach follows a series of high-profile crypto attacks this year.

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Just days ago, Coinbase reported a breach affecting nearly 70,000 user accounts.

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In February, North Korean hackers were blamed for a $1.4 billion theft from Bybit.

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According to Chainalysis, cybercriminals stole over $2 billion in crypto in 2024, and the pace of 2025 suggests the trend is accelerating.

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Security experts say that despite the maturation of DeFi protocols, security remains a fundamental weakness.

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