Cronos has published a post-mortem showing that the Tectonic exploit generated $120.4 million in manipulated borrowing, of which $9.19 million — 7.6% — moved off the blockchain before validators stopped block production.
The Tuesday report confirms that rolling the network back to its state before the incident unwound roughly $111.2 million. The figure exceeds initial assessments, which put the affected amount near $75 million, and raises the confirmed outflow above the $8.3 million Bitquery had earlier tracked to Ethereum.
A single transaction drained nine lending markets operated by Tectonic, moving stablecoins, Bitcoin, Ether and other tokens across 11 transfers. Bitquery's analysis found that the attacker placed a $5 million deposit, then ran a 98-cycle sequence of borrowing and redepositing TONIC while buying the token. Thin liquidity let the buying push TONIC's price up nearly 300-fold, and Tectonic's oracle mirrored the surge.
Tectonic flagged the anomaly at 12:49 UTC on Aug. 30. Validators halted the chain at 14:32:47 UTC the same day and brought block production back online at 23:49:01 UTC once balances had been restored to their pre-exploit levels.
Source: cointelegraph.com