Aptos has patched a critical vulnerability in its Move virtual machine that security researchers estimated could have been exploited for as little as a few hundred dollars, raising serious questions about the cost-to-impact ratio of attacks on major blockchain networks. The vulnerability was identified by ethical hackers and disclosed through a responsible security process. According to a detailed writeup published by security firm Hexens, the flaw resided in the MoveVM, the execution engine that underpins smart contract processing on the Aptos blockchain. For related coverage, see Aptos Bounces from Key Support: Is a Surge Towards $14 Level Incoming.