Incident Overview
An attacker exploited vulnerabilities in the shared Cosmos EVM module (an arithmetic underflow in the staking precompile’s balance write-back after delegation, combined with vesting account handling and other undisclosed bugs). By creating a vesting account and deploying a contract to it, the attacker repeated the technique 18 times, draining approximately 148.3 million KII from various wallets. KiiChain halted the network at block 9355723 to stop further theft.
Sources & References
This record presents information attributed to the linked sources. Incident dates describe the original event, not a new report. Reported loss figures reflect the source record and are not current market valuations.