Windows 10 must be configured to prevent Microsoft Edge browser data from being cleared on exit.

From Windows 10 Security Technical Implementation Guide

Associated with: CCI-000366

SV-89089r2_rule Windows 10 must be configured to prevent Microsoft Edge browser data from being cleared on exit.

Vulnerability discussion

Clearing browser data on exit automatically deletes specified items when the last browser window closes. This data could be used to identify malicious websites and files that could later be used for anti-virus and Intrusion Detection System (IDS) signatures. Disabling this function will prevent the data from automatically being deleted when the browser closes.

Check content

This setting is applicable starting with v1703 of Windows 10; it is NA for prior versions. Windows 10 LTSC\B versions do not include Microsoft Edge; this is NA for those systems. 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\ Privacy\ Value Name: ClearBrowsingHistoryOnExit Type: REG_DWORD Value: 0x00000000 (0)

Fix text

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Allow clearing browsing data on exit" to "Disabled".

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