Title

Bypassing Microsoft Defender SmartScreen prompts for sites must be disabled. (Cat II impact)

Discussion

This policy setting allows a decision to be made on whether users can override the Microsoft Defender SmartScreen warnings about potentially malicious websites. If this setting is enabled, users cannot ignore Microsoft Defender SmartScreen warnings, and are blocked from continuing to the site. If this setting is disabled or not configured, users can ignore Microsoft Defender SmartScreen warnings and continue to the site.

Check Content

The policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/SmartScreen settings/Prevent bypassing Microsoft Defender SmartScreen prompts for sites" 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 "PreventSmartScreenPromptOverride" is not set to "REG_DWORD = 1", this is a finding. If this machine is on SIPRNet, this is Not Applicable.

Fix Text

Set the policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/SmartScreen settings/Prevent bypassing Microsoft Defender SmartScreen prompts for sites" to "Enabled".

Additional Identifiers

Rule ID: SV-235720r879550_rule

Vulnerability ID: V-235720

Group Title: SRG-APP-000073

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.