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## user.js | Firefox, Firefox ESR and Firefox Nightly.
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A `user.js` file for configuring and hardening desktop Firefox privacy.
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Concretely, this is a fork from the [arkenfox ](https://github.com/arkenfox/user.js ) project.
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## Goals
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* enhance privacy and security
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* improve performance
* better fingerprint possible
* reduce automatic connections to the minimum posible
## Considerations
This user.js is a fork from the arkenfox project with a substantial divergence. It tries to avoid all the automatic connections even though security could be reduced slightly.
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For instance, OSCP is a privacy breach. Nevertheless, it is also a security feature. This user.js disables them as well as safebrowsing, automatic addons connections and so on. You will have to check manually addons updates in the related preferences section.
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However, one connection could not be blocked anymore:
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* firefox.settings.services.mozilla.com
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https://bugzilla.mozilla.org/show_bug.cgi?id=1598562#c13
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[How to stop Firefox from making automatic connections ](https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections )
(Section "Automatic updates and Security/Login breach information")
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So you will have to include it to the host list of your OS.
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Nevertheless, consider installing Abrowser from Trisquel, Icecat (from Parabola or an unofficial build for Windows) and/or Iceweasel for Parabola. They lack that connection:
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[Abrowser ](https://archive.trisquel.info/trisquel/pool/main/f/firefox/?C=S;O=D )
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[Unofficial Icecat for Windows ](https://github.com/muslayev/icecat-win64 )
[Icecat for Parabola ](https://repomirror.parabola.nu/sources/parabola/ )
[Iceweasel ](https://repomirror.parabola.nu/sources/parabola/ )
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If you are still interested in using vanilla Firefox take into account it makes a connection to aus5.mozilla.org in order to autoupdate itself so you'll also have to add it to your host list.
Alternatively, you could copy the folder `distribution` with the `policies.json` file into your Firefox installation folder. More information about this:
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[Customizing firefox using policies.json ](https://support.mozilla.org/en-US/kb/customizing-firefox-using-policiesjson )
[DisableAppUpdate ](https://github.com/mozilla/policy-templates/blob/master/README.md#disableappupdate )
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Anyway, consider installing [Librewolf ](https://librewolf-community.gitlab.io ) instead of these. It's almost mitigated.
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## Updating addons
Write about:addons
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Choose Extensions
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Click the icon above on the right (Tools for all add-ons) and Check for updates.
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You may also install them manually downloading the respective xpi files.
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## Adding new search engines
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Installing new search engines from mycroftproject.com web is not working. Besides, they have embedded Google analytic trackers recently.
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Follow this guide instead:
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[Add a search engine from the address bar ](https://support.mozilla.org/en-US/kb/add-or-remove-search-engine-firefox#w_add-a-search-engine-from-the-address-bar )
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## Thanks:
I really thank the following authors:
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* [Arkenfox ](https://github.com/arkenfox/user.js ) - The majority of this user.js and updates.
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* [LibreWolf ](https://gitlab.com/librewolf-community ) - Some strings.
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* [Quindecim ](https://git.nixnet.xyz/quindecim/mobile_user.js ) - Some unique strings.
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* [Tor Project ](https://www.torproject.org ) - Some Tor Browser strings.
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* [Spyware Watchdog ](https://web.archive.org/web/20200402031335/https://spyware.neocities.org/guides/firefox.html ) - Mozilla Firefox Spyware Mitigation Guide (Archive.org)
## License
GNU General Public License v3.0.
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See `LICENSE` for more details.
## Other mirrors
https://gitlab.com/Jorgu81/user.js/tree/master/Firefox%20Desktop
