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Cronos Halts Blockchain After $75M Tectonic Exploit

Researchers said the attacker used Tectonic’s thin liquidity and TONIC’s 20% collateral factor to borrow other assets after a 100-fold price surge.

  • On Sunday, Cronos halted its blockchain after identifying an exploit in the decentralized lending protocol Tectonic that involved an estimated $75 million in assets.
  • Researcher Weilin Li described the incident as a "Mango-market style" pump-and-borrow attack, where the attacker exploited TONIC's 20% collateral factor and thin liquidity to manipulate prices.
  • Li estimated $66 million was initially affected; he later identified an additional $8 million in attacker-controlled addresses, bringing the total to roughly $75 million.
  • Crypto.com CEO Kris Marszalek confirmed the company's app and exchange remained unaffected, while Tectonic warned users to avoid interacting with the protocol during investigation.
  • Neither project has announced a restart timeline or compensation plans, as the industry faces separate security challenges including a reported 1,789 BTC loss in a Coldcard hack.
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TFTC broke the news on Sunday, August 30, 2026.
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