Cronos Recovers $111 Million in Stolen Funds by Rolling Back Blockchain

Cronos confirmed that on August 30, the lending platform Tectonic was attacked, involving $120.4 million in borrowing activities. Validators decided to roll back the on-chain history, successfully recovering approximately $111.2 million, which accounts for about 92% of the affected funds. Approximately $9.19 million was lost before the network was paused and could not be recovered. The attacker exploited weak DEX liquidity to inflate the price of Tectonic's token TONIC by about 100 times and borrowed $120.4 million in a single transaction across nine markets. Validators paused the network about two hours later, restoring the chain to the last block before the suspicious activity, with block production resuming approximately 11 hours after the attack. The rollback involved reversing 1 hour and 54 minutes of on-chain history, totaling 10,961 blocks, with all transactions being canceled. Cronos stated that the alternative would have been to restart the network without restoring the previous state, which would have left the stolen assets in the hands of the attacker. This rollback closely follows Harmony's announcement of a similar plan, while Flow abandoned its rollback proposal last December due to community opposition. The maximum number of validators for Cronos is 100, enabling quick coordination for pausing and restarting, but it also indicates that the network's finality in emergencies depends on validator consensus.

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