Cosmos EVM chains told to halt after security incident

Cosmos Labs urged affected Cosmos EVM chains to request validator halts on Aug. 25 as its security and engineering teams responded to an incident that had already reached multiple networks. Summary Cosmos Labs advised contacted Cosmos EVM chains to ask validators to halt during incident response. KiiChain reported 148,326,583.15 KII drained through 18 repeated attacks on August 22, 2026, officially confirmed. TAC said one account was drained before validators halted its network at block 24,671 Saturday. MANTRA resumed block production after roughly 30 hours and said user balances remained unchanged throughout. Cosmos Labs has not disclosed affected chains, vulnerability details or aggregate losses publicly to date. The company did not identify the underlying vulnerability, affected chains or total losses in its initial statement. It said users of the Cosmos EVM module had been affected and promised an incident report after the situation was resolved. Separate disclosures from MANTRA, TAC and KiiChain connect recent attacks to the Cosmos EVM software stack. However, Cosmos Labs has not publicly confirmed that these incidents share one exact vulnerability or named every chain asked t...