Signing in using a PIN must be turned off.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-36689	WN08-CC-000053	SV-48312r2_rule	IAIA-1	Medium

Description
Strong sign-on must be used to protect a system. The PIN feature is limited to 4 numbers and caches the domain password in the system vault.

STIG	Date
Windows 8 / 8.1 Security Technical Implementation Guide	2016-12-19

Details

Check Text ( C-44986r1_chk )
If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Subkey: \Software\Policies\Microsoft\Windows\System\ Value Name: AllowDomainPINLogon Type: REG_DWORD Value: 0

Fix Text (F-41445r1_fix)
Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Logon -> "Turn on PIN sign-in" to "Disabled".