Cronos has confirmed that $9.19 million in funds transferred off its blockchain before validators intervened to halt the network during the Tectonic exploit, according to a post-mortem report released Tuesday.
The Layer-1 blockchain said the exploit generated approximately $120.4 million in manipulated borrowing activity. A rollback restored the network to its pre-exploit state and reversed about $111.2 million, leaving 7.6% of the affected funds outside the network.
The official accounting clarifies the incident's scope after earlier estimates had suggested around $75 million was affected. The $9.19 million figure transferred off Cronos exceeds the $8.3 million previously traced to Ethereum by blockchain data provider Bitquery.
According to Bitquery's analysis, the attacker deposited $5 million, then repeatedly borrowed and redeposited TONIC through a 98-cycle loop while purchasing the thinly traded token. This activity drove TONIC's price approximately 300 times higher as Tectonic's price feed responded accordingly.
Tectonic detected the anomalous activity at 12:49 UTC on August 30, and validators halted the network at 14:32:47 UTC. Block production resumed at 23:49:01 UTC after balances were restored.
Cointelegraph previously reported that a single transaction had emptied nine Tectonic lending markets through 11 transfers involving stablecoins, Bitcoin, Ether, and other assets.
