What changed in Microsoft Windows Defender Antivirus STIG V2R3V2R3 changes

Microsoft Windows Defender Antivirus STIG V2R3 (2021-11-01) replaced V2R2 (2021-05-04): 1 check updated. It has 41 checks, against 41 in V2R2.

V2R3 checklistV2R2 checklist Compare V2R2 and V2R3 in STIG Compare

  • 0 added
  • 0 removed
  • 1 updated

Updated fields: Check text 1

Updated in V2R3 (1)

V-213454CAT IIWindows Defender AV must be configured to check for definition updates daily.Check text

Check text

Verify the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Defender Antivirus -> Signature Updates -> "Specify the day of the week to check for definition updates" is set to "Enabled" and "Every Day" is selected in the drop down box. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM1Software1Policies1Microsoft1Windows Defender1Signature UpdateUpdates Criteria: If the value "ScheduleDay" is REG_DWORD = 0, this is not a finding.

V-213454 in V2R3

How these changes are found

Checks are matched across the two releases by V-number. A check counts as updated when DISA gave it a new rule revision (the r number in its SV-…_rule id) and its title, severity, check text, fix text, discussion, CCIs or other fields changed — the same comparison STIG Compare makes. Added checks are new V-numbers; removed checks are V-numbers V2R3 no longer has.

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