Cronos Shuts Down Blockchain Following Massive $75M Attack On Tectonic Platform

TL;DR
- Attack Mechanics: TONIC’s thin liquidity allowed an attacker to inflate its price 100‑fold, deposit it into Tectonic, and borrow real assets, triggering an estimated $75 million loss.
- Cronos Shutdown: Cronos halted its blockchain to contain the exploit, freezing all user positions and preventing most stolen funds from leaving the network.
- DeFi Impact: Tectonic’s deposits collapsed from $121.7 million to roughly $3 million, while Cronos saw major shifts in DEX liquidity and no confirmed restart timeline.
Cronos shut down its entire blockchain on Sunday after an attacker exploited Tectonic, the network’s largest lending platform, in a strike estimated at roughly $75 million. The sudden halt froze every position on the chain, stopping trades, loans and automated strategies for users who had no connection to the incident. The blockchain said it identified an exploit and paused the network while security teams investigated.
Update on the network
We're still halted while we investigate the Tectonic exploit, with support from security teams across the industry.
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