Firefox private browsing must be disabled.

Private browsing allows the user to browse the internet without recording their browsing history/activity. From a forensics perspective, this is unacceptable. Best practice requires that browser history is retained.

Type "about:policies" in the browser window.

If "DisablePrivateBrowsing" is not displayed under Policy Name or the Policy Value is not "true", this is a finding.

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 Private Browsing Policy State: Enabled

macOS "plist" file: Add the following: <key>DisablePrivateBrowsing</key> <true/>

Linux "policies.json" file: Add the following in the policies section: "DisablePrivateBrowsing": true