Open research, stronger privacy: Making Firefox users harder to fingerprint
blog.mozilla.orgToo bad they still generate a random unique ID for each installed extension that can expose a trackable UUID...
I think it's great that Firefox is finally doing more to combat fingerprinting. For a long time, they lagged a bit behind Brave in this regard. That said, unfortunately, neither browser has been able to do anything about Cloudflare Turnstile yet. Kagi, for example, uses it to fingerprint users.
I believe the relevant work to mitigate that is https://hacks.mozilla.org/2026/06/pact-anonymous-credentials...
(I do work at Mozilla but not on any of this.)
I'd like to have some of the APIs that read the data used to fingerprint browsers be behind a confirmation dialog per site similar to allowing popups or microphone/video access.
> Oh, I see that you'd like to read the canvas pixel data, let me check if that's okay with the user first.
HTML5 canvas data access has been behind such a permission dialog on Firefox (at least on desktop) for a long time now.
One caveat I’ve experienced with Firefox branches that focus on privacy is I get “punished” with captchas from hell because I refuse to let websites siphon and prey on every last bit of private info. Hopefully this doesn’t succumb to the same issue.
Why do you want to use services that use such captchas? It’s like going to a club and complaining about the door policy. Don’t go if you don’t like it.
Surveillance fingerprinting will only end with major changes to the web.
If you are among those capable of 3rd order thinking or even just 2nd order thinking, and consider what kind of world you want to live in, you may already know that these changes must happen, even if that means the functional web is bifurcated for a while.
Maybe you can use your second-order thinking to consider how people might react to a sentence that starts “if you are among those capable of 3rd order thinking.”
Am I the only expecting it to completely break the sites behind cloudflare on Firefox?
Unless I'm misreading the post mentions that the most recent change was added to version 145 which released last year. Personally I haven't had any issues with cloudflare as a firefox user since then with strict mode enabled.
It links to this post when talking about it: https://blog.mozilla.org/en/firefox/fingerprinting-protectio...
Was also thinking this, would like an answer.