In August 2026, Cosmos Labs issued an emergency halt for all Cosmos EVM-based blockchains following a major security breach. KiiChain lost over 148 million KII tokens through 18 attacks exploiting vulnerabilities in vesting and staking mechanisms. TAC network also suffered a drain of a single account due to a Cosmos EVM precompile flaw. MANTRA paused operations for 30 hours but confirmed no user funds were lost after patching. Cosmos Labs is investigating and will release a full report detailing the vulnerabilities, affected chains, and total losses. Users are advised to monitor official channels and avoid unverified third-party transactions until the issue is resolved.
Cosmos Labs revealed a security breach in its Cosmos EVM module, which supports Ethereum-compatible smart contracts across multiple Cosmos-based blockchains. The flaw led to attacks on several networks, including MANTRA, KiiChain, and TAC, causing un...
Cosmos Labs identified a security incident affecting multiple Cosmos EVM chains, urging validators to halt networks to prevent further losses. Attacks on KiiChain and TAC resulted in significant token drains, while MANTRA paused and later resumed ope...
