ISM-2012 · September 2026
Screen locking
Guidelines for system access / Identity and access management / Screen locking
Official control wording
Systems are configured with a screen lock that: - activates after a maximum of 15 minutes of human user inactivity, or when manually activated - conceals all content on the screen - ensures that the screen does not enter a power saving state before the screen lock is activated - requires re-authentication by human users using all authentication factors to unlock the system - denies human users the ability to disable the screen locking mechanism.
Applicability
These are ASD’s applicability markings. Select and tailor controls for your system’s risk, classification and operating context with the system owner and authorising officer.
Implementation guidance
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Official source
ASD’s ISM OSCAL v2026.09.4 · Original catalogue JSON · Pinned checksums and edition details
Control source identifier: ism-2012. Check the official release before relying on this snapshot for an assessment.
Official control wording and applicability: Australian Signals Directorate, © Commonwealth of Australia 2026. September 2026 ISM, OSCAL v2026.09.4, reproduced under CC BY 4.0. Formatting is adapted for this website.
Latticework Systems’ implementation guidance is our interpretation. Provenance and scope.