Cronos Halts Blockchain After $75M Tectonic Exploit Triggers Sector Losses

Cronos, the layer-1 blockchain developed by Crypto.com, halted block production on August 30, 2026, after an attacker drained approximately $75 million from Tectonic, its largest decentralized lending protocol. The attack started with a 100x pump of the illiquid TONIC governance token, which was used as collateral to borrow other assets.

The attacker inflated the price of TONIC roughly 100 times in about 20 minutes and borrowed against the manipulated collateral. Only about $6 million of the proceeds reached Ethereum before validators froze the chain. The exploit triggered $8.71 million in liquidations and left $32.6 million as bad debt, worsening 2026 sector losses over $1.26 billion.

Tectonic's own published parameters give TONIC a 20% collateral factor, but the token had thin trading liquidity of roughly $1.34 million and daily volume of about $11,000 ahead of the attack. The attacker used this vulnerability to manipulate the market price of TONIC.