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Bypassing of Microsoft Defender SmartScreen warnings about downloads must be disabled.


Overview

Finding ID Version Rule ID IA Controls Severity
V-235721 EDGE-00-000003 SV-235721r766835_rule Medium
Description
This policy setting allows a decision to be made on whether users can override Microsoft Defender SmartScreen warnings about unverified downloads. If this setting is enabled, users cannot ignore Microsoft Defender SmartScreen warnings, and are prevented from completing the unverified downloads. If this policy is disabled or not configured, users can ignore Microsoft Defender SmartScreen warnings and complete unverified downloads.
STIG Date
Microsoft Edge Security Technical Implementation Guide 2022-06-17

Details

Check Text ( C-38940r766833_chk )
The policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/SmartScreen settings/Prevent bypassing of Microsoft Defender SmartScreen warnings about downloads" must be set to "Enabled".

Use the Windows Registry Editor to navigate to the following key:
HKLM\SOFTWARE\Policies\Microsoft\Edge

If the value for "PreventSmartScreenPromptOverrideForFiles" is not set to "REG_DWORD = 1", this is a finding.

If this machine is on SIPRNet, this is Not Applicable.
Fix Text (F-38903r766834_fix)
Set the policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/SmartScreen settings/Prevent bypassing of Microsoft Defender SmartScreen warnings about downloads" must to "Enabled".