this post was submitted on 15 Dec 2024
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Privacy

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On Librewolf i got 16.48 bits of information, on TOR browser 10.32 bits, but on Tails I managed to get only 9.3 bits.

https://coveryourtracks.eff.org/

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[–] [email protected] 54 points 6 days ago (2 children)

If you have canvas randomisation turned on (firefox) you'll always be unique but also not traceable between sessions.

[–] [email protected] 11 points 6 days ago

Yup, canvas is heavily weighted in this test based on the results.

[–] [email protected] 4 points 5 days ago (1 children)

How do you turn on canvas randomisation in Firefox? I can't seem to find anything about it.

[–] [email protected] 3 points 5 days ago (1 children)

I found this in about:config, defaults to true apparently: privacy.resistFingerprinting.randomDataOnCanvasExtract

But you have to enable privacy.resistFingerprinting for it to work first. I enabled that and now the EFF test says "randomized" for the hashes but also Lemmy went from dark to light theme somehow.

[–] [email protected] 2 points 2 days ago

privacy.resistFingerprinting breaks a lot more than just themes. Many of the weird problems reported in Firefox (and forks) are just from enabling it.

It has some pros but also TONNES of cons. Everything from a completely blank page to wrong timestamps to poor textures and so much more. Sometimes you will be flagged as a bot and prompted with literally infinite puzzles, thus effectively banning you from a website.

Some of these problems get fixed but new ones also get born. I personally use it but I also expect breakage and worse performance.

[–] [email protected] 17 points 6 days ago (2 children)

Am I wrong to assume trying to blend in is a worse and contradictory strategy than trying to actively protect yourself from tracking?

If you want to not be unique, use default setting chrome without adblock. Your browser will look just like anybody else's, but they will literally know who you are.

On the opposite side of the spectrum, you lock everything down and spike as a very special browser and... that's all they know.

[–] [email protected] 21 points 6 days ago (2 children)
[–] [email protected] 2 points 5 days ago

Not what I meant: https://github.com/arkenfox/user.js/wiki/3.3-Overrides-%5BTo-RFP-or-Not%5D#-fingerprinting

"If you do nothing on desktop, you are already uniquely identifiable - screen, window and font metrics alone are probably enough - add timezone name, preferred languages, and several dozen other metrics and it is game over. Here is a link to the results of a study done in 2016 showing a 99.24% unique hit rate (and that is excluding IP addresses).

Changing a few prefs from default is not going to make you "more unique" - there is no such thing."

Basically making yourself less unique is impossible so there's no sensible tradeoff to be made (other than in the context of Tor and Mullvad Browser).

[–] [email protected] 3 points 5 days ago

Right. The question is whether they can attach what they know to an identity. Depends on your threat model which goal you need to achieve.

[–] [email protected] 13 points 6 days ago* (last edited 6 days ago)

But then they can know a lot more since they don't even need to drop a cookie to track you. But that's a different threat model.

[–] [email protected] 4 points 5 days ago

Default Google Chrome embedded on Android with nothing configured and googled up.

17 bits.

[–] [email protected] 11 points 6 days ago

Your browser fingerprint appears to be unique among the 183,996 tested in the past 45 days.

:(

[–] [email protected] 2 points 4 days ago (1 children)

It constantly gives me 17.5 bits on several browsers firefox, nyxt, gnu icecat, librewolf...

[–] [email protected] 2 points 4 days ago

Number of bits can also depend on your UI scaling, resolution and timezone.

[–] [email protected] 5 points 6 days ago (2 children)

Your browser fingerprint appears to be unique among the 183,951 tested in the past 45 days.

Currently, we estimate that your browser has a fingerprint that conveys at least 17.49 bits of identifying information.

well shoot my mobile failed that test lmao

[–] [email protected] 6 points 6 days ago (1 children)
[–] [email protected] 6 points 6 days ago (1 children)

I got exactly that number too, but also when I looked at the detailed results section lots of it was incorrect. It got that I was on some sort of Linux and using some sort of FF variant, but things like time zone, plugins, screen resolution and system fonts were all wrong.

So sending out 17.49 bits of largely identifying bullshit is still okay I think lol.

[–] [email protected] 3 points 6 days ago

Could it be that the browser shares false information on purpose?

[–] [email protected] 4 points 5 days ago

I got 17.5 on my Desktop Firefox lol

[–] [email protected] 6 points 6 days ago (1 children)

16.47 on Cromite. But most of the identify information is not even true, almost everything is spoofed. User agent, timezone, operating system, browser name, screen size and color depth, device, even the battery percentage

[–] [email protected] 1 points 4 days ago (1 children)

Does this spoofing change with every page you visit? If so that's really neat!

[–] [email protected] 1 points 3 days ago* (last edited 3 days ago)

screen size, system time, color depth, battery percentage does

[–] [email protected] 3 points 5 days ago* (last edited 5 days ago) (1 children)

9.3 bits / 1:628.3
(ipadOS / safari)

...how do they quantify 3/10 of a bit?..

[–] [email protected] 4 points 5 days ago* (last edited 5 days ago)

They probably give entropy value, average number of, yes or no, questions that are needed to identify You. (Guess all the information that your browser provided)

[–] [email protected] 4 points 6 days ago

Vanadium: Your Results Within our dataset of several hundred thousand visitors tested in the past 45 days, only one in 61101.0 browsers have the same fingerprint as yours.

Currently, we estimate that your browser has a fingerprint that conveys 15.9 bits of identifying information.

[–] [email protected] 4 points 6 days ago

I get 8.44 bits (1 in 347.34 browsers). I use Firefox with Arkenfox user.js applied on top, with some of my own custom overrides.

However, I think the biggest factor could be because I have Ublock Origin set to medium-hard mode (block 1st party scripts, 3rd party scripts and 3rd party iframes by default on all websites), so the lack of JavaScript heavily affects what non-whitelisted websites can track. I did whitelist 1st-party scripts on the main domain for this test (coveryourtracks.eff.org), but all the 'tracker' site redirects stay off the whitelist.

I actually had to allow Ublock Origin to temporarily visit the tracker sites for the test to properly finish--otherwise it gives me a big warning that I'm about to visit a domain on the filter list.

[–] [email protected] 4 points 6 days ago (1 children)

with budget vpn on: one in 22756.25 browsers have the same fingerprint as yours

with budget vpn off and just apple safebrowsing on: one in 20231.22 browsers have the same fingerprint as yours.

i have the worst vpn!

[–] [email protected] 4 points 6 days ago (6 children)

A VPN is unrelated, it changes your IP but the IP is not used to fingerprint.

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[–] [email protected] 4 points 6 days ago

Best methods to lower the score on android? I tested multiple browsers on EFF. 17 bits regardless of browser.

[–] [email protected] 1 points 5 days ago
[–] [email protected] 4 points 6 days ago

I appreciate the site, but what score is considered good or bad? A cool stat would be some kind of score compared to everyone else.

[–] [email protected] 2 points 5 days ago (1 children)
[–] [email protected] 1 points 5 days ago (1 children)

Didn't know Vivaldi had this capability, I just used it because it was the only decent browser with an on/off sidebar till zen

[–] [email protected] 1 points 5 days ago

Not only the sidebar, you can tweak almost everything to your like.

[–] [email protected] 3 points 6 days ago

Interesting, this is a cool test! Unsurprisingly, my setup is rather unique.

One thing that stood out to me is that it failed to detect my adblocker. Also, my screen size alone is unique: 1 in 181697 of this 181697 browsers tested.

[–] [email protected] 3 points 6 days ago

What would be considered a high score on this? Is 16 too high?

[–] [email protected] 2 points 6 days ago

17.47 on mobile Vivaldi.

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