A screen saver must be defined.

From Windows 8/8.1 Security Technical Implementation Guide

Associated with IA controls: PESL-1

Associated with: CCI-000060

SV-48461r2_rule A screen saver must be defined.

Vulnerability discussion

Unattended systems are susceptible to unauthorized use and must be locked. Specifying a screen saver ensures the screen saver timeout lock is initiated properly. This protects critical and sensitive data from exposure to unauthorized personnel with physical access to the computer.

Check content

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_CURRENT_USER Subkey: \Software\Policies\Microsoft\Windows\Control Panel\Desktop\ Value Name: SCRNSAVE.EXE Type: REG_SZ Value: scrnsave.scr

Fix text

Configure the policy value for User Configuration -> Administrative Templates -> Control Panel -> Personalization -> "Force specific screen saver" to "Enabled" with "scrnsave.scr" specified as the Screen saver executable name.

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