Detections
Analytics

18.9.28.1 (L1) Ensure 'Block user from showing account details on sign-in' is set to 'Enabled'

Information

This policy prevents the user from showing account details (email address or user name) on the sign-in screen.

The recommended state for this setting is: Enabled

An attacker with access to the console (for example, someone with physical access or someone who is able to connect to the workstation through Remote Desktop Services) could view the name of the last user who logged on to the server. The attacker could then try to guess the password, use a dictionary, or use a brute-force attack to try and log on.

Solution

To establish the recommended configuration via GP, set the following UI path to Enabled :

Computer Configuration\Policies\Administrative Templates\System\Logon\Block user from showing account details on sign-in

Note: This Group Policy path is provided by the Group Policy template Logon.admx/adml that is included with the Microsoft Windows 10 Release 1607 & Server 2016 Administrative Templates (or newer).

Impact:

Users cannot choose to show account details on the sign-in screen.

See Also

https://workbench.cisecurity.org/benchmarks/21994

Item Details

Category: CONFIGURATION MANAGEMENT, SYSTEM AND SERVICES ACQUISITION

References: 800-53|CM-2, 800-53|CM-6, 800-53|CM-7, 800-53|CM-7(1), 800-53|CM-9, 800-53|SA-3, 800-53|SA-8, 800-53|SA-10, CSCv7|5.1

Plugin: Windows

Control ID: b0277123ff3883ab86893747fbe93d1cbc3b654774edd5e6ac3dedc2ab5d78c4