Firefox must prevent the user from quickly deleting data.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-251562	SRG-APP-000326	FFOX-00-000018	SV-251562r987660_rule	2025-02-11	6

Description
There should not be an option for a user to "forget" work they have done. This is required to meet non-repudiation controls.

ℹ️ Check
Type "about:policies" in the browser address bar. If "DisableForgetButton" is not displayed under Policy Name or the Policy Value is not "true", this is a finding.

✔️ Fix
Windows group policy: 1. Open the group policy editor tool with "gpedit.msc". 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Mozilla\Firefox Policy Name: Disable Forget Button Policy State: Enabled macOS "plist" file: Add the following: <key>DisableForgetButton</key> <true/> Linux "policies.json" file: Add the following in the policies section: "DisableForgetButton": true

✔️ Fix

Windows group policy: 1. Open the group policy editor tool with "gpedit.msc". 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Mozilla\Firefox Policy Name: Disable Forget Button Policy State: Enabled macOS "plist" file: Add the following: <key>DisableForgetButton</key> <true/> Linux "policies.json" file: Add the following in the policies section: "DisableForgetButton": true