Information
Specifies whether or not the user is prompted for a password when the system resumes from sleep.
The recommended state for this setting is: Enabled
Enabling this setting ensures that anyone who wakes an unattended computer from sleep state will have to provide logon credentials before they can access the system.
Solution
To establish the recommended configuration via GP, set the following UI path to Enabled :
Computer Configuration\Policies\Administrative Templates\System\Power Management\Sleep Settings\Require a password when a computer wakes (on battery)
Note: This Group Policy path is provided by the Group Policy template Power.admx/adml that is included with the Microsoft Windows 8.0 & Server 2012 (non-R2) Administrative Templates (or newer).
Impact:
None - this is the default behavior.