The system must be configured to prevent the display of the last username on the logon screen.

From Windows Server 2012/2012 R2 Domain Controller Security Technical Implementation Guide

Part of Display of Last User Name

Associated with: CCI-000366

SV-52941r1_rule The system must be configured to prevent the display of the last username on the logon screen.

Vulnerability discussion

Displaying the username of the last logged on user provides half of the userid/password equation that an unauthorized person would need to gain access. The username of the last user to log on to a system must not be displayed.

Check content

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: DontDisplayLastUserName Value Type: REG_DWORD Value: 1

Fix text

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Interactive logon: Do not display last user name" to "Enabled".

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