Nesa was exploited through a Cosmos EVM vulnerability involving inconsistent balance accounting between Cosmos EVM and the Cosmos SDK. In the shared exploit mechanism documented by Cosmos Labs, delegation of locked tokens from a vesting account through the staking precompile could cause an unchecked EVM balance underflow to approximately 2^256. The resulting artificial balance could then be used to overflow a high-balance victim account, reducing the victim balance to zero while transferring its legitimate tokens to the attacker, with no net increase in token supply. Nesa has confirmed exploitation of a Cosmos EVM vulnerability but has not publicly disclosed its Nesa-side exploit transaction or victim account, so application of the exact shared mechanism to Nesa remains strongly supported but not independently demonstrated at transaction level