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APPL-26-000007 The macOS system must disable hot corners.

DISA STIG library V1R4
All changes in this version
first version loaded CAT II

Maps to AC-11(1) via CCI-000060

Title

The macOS system must disable hot corners.

Control

Verify the macOS system is configured to disable hot corners with the following command: /usr/bin/profiles -P -o stdout | /usr/bin/grep -Ec '"wvous-bl-corner" = 0|"wvous-br-corner" = 0|"wvous-tl-corner" = 0|"wvous-tr-corner" = 0' If the result is not "4", this is a finding.

Discussion

Hot corners must be disabled. The information system conceals, via the session lock, information previously visible on the display with a publicly viewable image. Although hot corners can be used to initiate a session lock or to launch useful applications, they can also be configured to disable an automatic session lock from initiating. Such a configuration introduces the risk that a user might forget to manually lock the screen before stepping away from the computer.

Related controls

CCI-000060

Fix

Configure the macOS system to disable hot corners by installing the "com.apple.ManagedClient.preferences" configuration profile.