The first-layer blockchain Cronos reported that $9.19 million was withdrawn from its network before validators halted it during the Tectonic exploit. This has become the official calculation of funds that were not recovered by the rollback.
In an investigation report published on Tuesday, Cronos stated that collateral price manipulations led to borrowings of approximately $120.4 million. Restoring the network to its pre-exploit state reversed operations worth about $111.2 million, leaving 7.6% of the affected funds outside the network.
This disclosure confirms the scale of the incident: the volume of affected funds was previously estimated at around $75 million. It also shows that $9.19 million was transferred out of Cronos—more than the $8.3 million previously tracked on Ethereum by blockchain data provider Bitquery.
As Cointelegraph previously reported, a single transaction drained nine Tectonic lending markets through 11 transfers involving stablecoins, Bitcoin, Ether, and other assets.
According to Bitquery, the attacker deposited $5 million and then repeatedly borrowed and re-deposited TONIC in a cycle of 98 repetitions, simultaneously purchasing an illiquid token. This caused the price of TONIC to increase nearly 300-fold as Tectonic's price oracle followed it.
Cronos reported that Tectonic detected the 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 account balances were restored.
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