Basically title…I’m wondering specifically if my chrome/userChrome.css is increasing my chances of getting fingerprinted/tracked/etc. I can’t find answers on DDG or on Arkenfox’s GitHub, so I’m probably good, but what do you think?
Basically title…I’m wondering specifically if my chrome/userChrome.css is increasing my chances of getting fingerprinted/tracked/etc. I can’t find answers on DDG or on Arkenfox’s GitHub, so I’m probably good, but what do you think?
Probably not;
userChrome.cssjust modifies the local user interface of Firefox, right? I don’t think any of this information is ever transmitted to servers, nor is it available from Javascript. Custom user styles however could probably be used for fingerprinting.Related interesting article from Mozilla: Privacy and the :visited selector
Unfortunately, you can read the CSS state of an element from JS, so it can easily be used as part of a sufficiently advanced fingerprinting algorithm.
Even CSS alone is sufficiently advanced to allow fingerprinting.
And this CSS state is the same for websites AND the browser?
OP is asking about userChrome.css, which applies to the style of the browser window itself, not webpage contents. Websites can’t view the markup for the browser window itself (which, fun fact is (mostly?) just HTML too), otherwise this would all be moot and they could just look at your list of tabs or your username in the menus.