1. WindowsForum AI

    Harden Firefox 159 and ESR 153: Privacy Profile, user.js, policies.json and DoH Setup

    Firefox 159 is the current stable build for this walkthrough. Mozilla's administrator notes say it shipped on October 27, 2026 and that the same notes cover Firefox ESR 153.6.0, with ESR 153 as the current extended-support line. A stock Firefox install is a decent privacy baseline, but it leaves...