Connected users on domain-joined computers must not be enumerated.

From Windows 8 Security Technical Implementation Guide

Part of WN08-CC-000050

Associated with IA controls: ECSC-1

SV-48303r1_rule Connected users on domain-joined computers must not be enumerated.

Vulnerability discussion

The username is one part of logon credentials that could be used to gain access to a system. Preventing the enumeration of users limits this information to unauthorized personnel.

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Fix text

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Logon -> "Do not enumerate connected users on domain-joined computers" to "Enabled".

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