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Users must not be allowed to ignore SmartScreen filter warnings for unverified files in Microsoft Edge.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-63701 | WN10-CC-000235 | SV-78191r3_rule | Medium |
| Description |
|---|
| The SmartScreen filter in Microsoft Edge provides warning messages and blocks potentially malicious websites and file downloads. If users are allowed to ignore warnings from the SmartScreen filter they could still download potentially malicious files. |
| STIG | Date |
|---|---|
| Windows 10 Security Technical Implementation Guide | 2017-02-21 |
Details
| Check Text ( C-64449r2_chk ) |
|---|
| If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\MicrosoftEdge\PhishingFilter\ Value Name: PreventOverrideAppRepUnknown Type: REG_DWORD Value: 0x00000001 (1) |
| Fix Text (F-80423r1_fix) |
|---|
| Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Prevent bypassing SmartScreen prompts for files" to "Enabled". Prior to v1607 of Windows 10, the policy name was "Don't allow SmartScreen Filter warning overrides for unverified files". |