AC-11(1): Pattern-Hiding Displays

Control Family:

Access Control

Parent Control:

AC-11: Session Lock

CSF v1.1 References:

Threats Addressed:


  • Moderate
  • High

Next Version:

Control Statement

The information system conceals, via the session lock, information previously visible on the display with a publicly viewable image.

Supplemental Guidance

Publicly viewable images can include static or dynamic images, for example, patterns used with screen savers, photographic images, solid colors, clock, battery life indicator, or a blank screen, with the additional caveat that none of the images convey sensitive information.