The Cronos Network resumed producing blocks Sunday at 23:49 UTC, starting from block 90,896,189, after validators halted the chain earlier in the day to stop an active exploit on lending protocol Tectonic from causing further damage.
What Happened
Cronos said the shutdown was a validator-consensus emergency action taken to protect users once the Tectonic exploit was detected. The team restored the chain’s state to the point before the attack occurred, then resumed normal block production once the fix was in place.
According to security firm PeckShield, the attacker drained roughly $74 million from Tectonic but managed to bridge only about $6 million to Ethereum before the chain was paused, leaving an estimated $60 million stuck and unrecoverable by the attacker.
Crypto.com co-founder Kris said in an earlier post that the Cronos team was investigating the breach with help from Crypto.com’s security team, and confirmed the Crypto.com app and exchange were unaffected and continued operating normally throughout the incident, with all user funds on the platform safe.
What’s Next for Node Operators and Users
Node operators can now restart their systems on Cronos v1.7.8 using the latest mainnet snapshot, released at 09:52 UTC on August 31. Cronos said the network remains under close observation while stability is confirmed, and warned that some protocols, RPC providers, block explorers and bridges will take longer to come back online as they complete their own checks.
In a separate update, Cronos confirmed its beta app is being brought back online for testers, with more features to follow, and reiterated that user funds remain safe. The team said a full postmortem on the exploit will be released soon.
Halting an entire blockchain network is an extreme step, typically reserved for situations where a live exploit threatens to drain significantly more funds if left unchecked. The fact that only $6 million of the $74 million stolen actually left the ecosystem suggests the emergency pause worked as intended, even as questions remain about how the Tectonic protocol was breached in the first place.
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