AC-11(1)—Device Lock | Pattern-hiding Displays
IL4 Mod
IL4 High
IL5
IL6
>Control Description
Conceal, via the device lock, information previously visible on the display with a publicly viewable image.
>DoD Impact Level Requirements
No specific parameter values or requirements for this impact level.
>Discussion
The pattern-hiding display can include static or dynamic images, such as patterns used with screen savers, photographic images, solid colors, clock, battery life indicator, or a blank screen with the caveat that controlled unclassified information is not displayed.
>Programmatic Queries
Beta
Related Services
Amazon WorkSpaces
AWS Systems Manager
Amazon AppStream
CLI Commands
Get WorkSpaces bundle properties for session timeout
aws workspaces describe-workspace-bundles --query 'Bundles[].{Name:Name,Id:BundleId}'Modify WorkSpaces running mode with auto-stop
aws workspaces modify-workspace-properties --workspace-id WORKSPACE_ID --workspace-properties RunningMode=AUTO_STOP,RunningModeAutoStopTimeoutInMinutes=60Describe SSM session manager preferences
aws ssm describe-document --name SSM-SessionManagerRunShell --query 'Document.Content'Update session idle timeout
aws ssm update-document --name SSM-SessionManagerRunShell --content '{"schemaVersion":"1.0","description":"Session preferences","sessionType":"Standard_Stream","inputs":{"idleSessionTimeout":"15"}}' --document-version '$LATEST'>Assessment Interview Topics
Questions assessors commonly ask
Process & Governance:
- •What formal policies and procedures govern the implementation of AC-11(1) (Pattern-Hiding Displays)?
- •Who are the designated roles responsible for implementing, maintaining, and monitoring AC-11(1)?
- •How frequently is the AC-11(1) policy reviewed and updated, and what triggers policy changes?
- •What training or awareness programs ensure personnel understand their responsibilities related to AC-11(1)?
Technical Implementation:
- •Describe the specific technical mechanisms or controls used to enforce AC-11(1) requirements.
- •What automated tools, systems, or technologies are deployed to implement AC-11(1)?
- •How is AC-11(1) integrated into your system architecture and overall security posture?
- •What configuration settings, parameters, or technical specifications enforce AC-11(1) requirements?
Evidence & Documentation:
- •What documentation demonstrates the complete implementation of AC-11(1)?
- •What audit logs, records, reports, or monitoring data validate AC-11(1) compliance?
- •Can you provide evidence of periodic reviews, assessments, or testing of AC-11(1) effectiveness?
- •What artifacts would you present during a FedRAMP assessment to demonstrate AC-11(1) compliance?
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