MultiversX Halts Mainnet After Attacker Exploits VM Atomicity Flaw

A VM-layer atomicity bug is a more serious class of failure than a routine bridge or contract exploit, because it undermines the assumption that on-chain state transitions are final and consistent — the foundation validators and exchanges rely on. The choice to validate the fix in a shadow fork before coordinating validators, exchanges and bridges shows the response is being treated as a consensus-critical event, not a patch. The open question is whether the invalid state changes are fully reversible once the fix ships, and how exchanges and bridges handle EGLD and ESDT flows during the pause.