GoKawiilFirefox 155 retest: AI 'kill switch' still leaves telemetry and ad tracking active
A follow-up Wireshark analysis of Firefox 155 confirms an earlier finding: toggling off Mozilla's AI kill switch disables generative AI features but does nothing to stop background telemetry or advertising data collection. The retest comes six months after Mozilla's CEO publicly called the AI switch one of the browser's most important features, even as onboarding flows never mention what the control actually covers.
GoKawiil's interpretation of the reporting above, not reported fact.
The gap between what users expect a 'privacy' toggle to do and what it actually does undermines trust precisely on the issue Mozilla claims to champion. With Mozilla's own CEO framing consent as central to AI ethics, leaving telemetry and ad tracking outside that consent flow looks like a significant blind spot rather than a technical footnote.
- Firefox's AI kill switch only disables generative AI features, not telemetry or ad tracking.
- Independent network testing (Wireshark) confirms this behavior persists in Firefox 155, unchanged from earlier versions.
- Mozilla leadership has publicly emphasized consent around AI, yet onboarding doesn't clarify what the AI switch actually controls.
Linux Magazine (US edition) subscription — The author's Firefox privacy investigation made the cover of Linux Magazine's US edition interesting reading for anyone who cares about browser telemetry and open source deep dives. A subscription keeps that kind of hands-on Linux and privacy reporting arriving regularly.
See Linux Magazine (US edition) subscription on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: marius.blog — Marius Quabeck, 2026-09-02
Published there as: “Firefox's AI Switch Is Off. Telemetry Isn't”
Read the original report → The summary and analysis above are GoKawiil's own, written from reporting by the source above. Facts and quotes belong to the original publisher.