Your browser engine is very easy to identify, it would be useless to lie and it would also cause a lot of breakage.

What do you mean by this? It already reports Linux in the navigator UA, are you talking about the HTTP header? If so, I agree with you and I'm hoping to see a change as it is overkill (although there are reasons against namely passive fping protection in some rare cases).

It causes breakage too, ideally reporting this could influence a change in RFP but there are some blocking issues (things to discuss) at the moment and it is low priority. We could anticipate the change with a patch but we haven't thought about this yet as we are usually against changing RFP.

I shared this a while ago in the Firefox community --> https://lemmy.ml/post/209597

see y'all there, I updated the lemmy sidebar already :-)

Mull is super nice and its dev does a lot of good open source stuff, recommended!

2mo later I gotta say I'm sorry that I haven't been able to keep up with lemmy (or even worse with reddit where I haven't logged in ages) lately, I've been pretty busy to the point where even release announcements disappeared.

indeed it does, but most people wouldn't really care in 2023.

https://librewolf.net/docs/faq/#will-you-provide-an-android-version-of-librewolf

https://librewolf.net/docs/testing/ says:

These tests are not intended to be used as oracles, but rather as a way to check your setup and verify that your changes are applied. You should not read too much into the results unless you are sure you understand them, as explained in this article.

https://blog.pastly.net/posts/2019-01-19-about-to-use-tor/#testing-your-fingerprint

BTW I commented about this in the past, see https://gitlab.com/librewolf-community/browser/windows/-/issues/276#note_1137125815

it's covered, yes. we enable a built-in list that strips some query params and we also add an extra one that strips more stuff (courtesy of the great https://github.com/DandelionSprout).

btw Firefox also has native query stripping now, so there's one extra layer of protection! see https://privacytests.org/

I just ran TBB and used deviceinfo.me to verify

ironic how this is posted below an article that says that testing websites are not reliable and that you should not read into the results unless you understand them. I don't think this is the case, sorry about being painfully honest but I don't want people to freak out over tests instead of reading a well written article:

• all of the metrics you mention as spoofed (plus a lot more, even ones that you mention in your list like navigator UA, window size, TP on/off, color depth, private mode..) carry close to no entropy. that's because Tor Browser has a crowd and users fit in that crowd, so even if the script was advanced to go over all the metrics covered by TB (which most of the time isn't the case), the crowd would allow you to fit in.
• the spoofed UA in the http-header is actually for passive fingerprinting. generally speaking, your actual OS cannot be spoofed and even with JS disabled it can be bypassed by using CSS/fonts. while it's true that TB safest mode restricts the font list and it will probably defeat most PoC out there (I think? I don't remember but it should) it's a big sacrifice in terms of usability when you could simply fit in with the crowd of people using TB on your same OS: arguably that's good enough for almost everyone.
• timing attacks are mitigated.
• stuff like position in page, last item clicked, cursor position etc is fuzzy, how do you fingerprint based on that? plus https://github.com/arkenfox/TZP#-fingerprints-are-always-loose

You want to know what a JS enabled Tor Browser looks like? A standard Firefox private mode tab with uBlock Origin medium mode and arkenfox user.js applied.

that's simply not true. TB has further enhancement and code changes, it is based on ESR plus it's not the same as a private window at all since private mode does not write to disk for example. most importantly tho: TB has crowd and the Tor network, that's vital and a huge difference. a traffic analysis would also probably identify Firefox + uBO in medium mode vs TB. also, arkenfox does not try to make Firefox turn into TB, that's clearly stated in the wiki and I would know as I am a repo admin :-)

Can the author explain me why keeping JS on is so helpful

usability, a browser with JS disabled by default is not a good everyday browser for most. the more people use Tor Browser daily and have a good experience with it, the larger the crowd gets.

All the above information I mentioned is trackable for...

I mean once you are subscribed, why would they want to fingerprint you? they already know who you are. when facebook operates as third party it will be isolated plus on a different circuit and with fingerprinting protection, plus (from arkenfox's wiki):

if a fingerprinting script should run, it would need to be universal or widespread (i.e it uses the exact same canvas, audio and webgl tests among others - most aren't), shared by a data broker (most aren't), not be naive (most are) and not be just first party or used solely for bot detection and fraud prevention (most probably are)

I also don't get what the difference between typing private stuff on facebook on tor or behind a vpn or on your ISP's network is. however I must say that I still understand why from a "peace of mind" perspective it makes sense to keep stuff isolated, so as I said above mine is not really a strong opinion here.

sorry about typing a lot, but I figured this was valuable information to share, despite being nothing new.

I will start by saying that the author of the article was a tor researcher and dev so this gives some context on the content and me posting this.

which is a very risky thing to do for someone not familiar

may I ask why? I generally agree with the sentiment of the article but I don't have a very strong opinion on this and maybe I'm missing something.

PS I don't think the usual "I will end up in a list of people who use Tor" argument is a valid one.

Preferring JavaScript stay disabled is a better choice, the next best is only allowing JavaScript when needed momentarily.

I disagree with this, it's simply overkill for 99% of the people with arguably no benefit at all. what's there to gain?