IMHO, iceraven shouldn’t be used in a “production” enviroment, the updates are sometimes slow and it has some security problems (at least, when I tried it). I can suggest you to use fennec or, if you want to try an hardened configuration, Mull. Mull is developed by the DivestOS team, and use settings from the arkenfox user.js. You can add this repository to download it https://divestos.org/fdroid/official?fingerprint=E4BE8D6ABFA4D9D4FEEF03CDDA7FF62A73FD64B75566F6DD4E5E577550BE8467 Only an advice to avoid breaking too many websites, if you’re gonna use Mull: change the setting “security.OCSP.require” to false