Ontology has paused mainnet block production after identifying a potential security risk during a routine security check. The team said it is conducting a comprehensive security review and stressed that no security incident has been confirmed. Based on its current assessment, user assets remain unaffected, including ONT, ONG, and other on-chain assets. Ontology described the halt as a preventive measure rather than a response to confirmed losses or an active attack, and said no timeline has been set for resuming normal operations.