[Bug-gnuzilla] Distros: Firefox derivatives (icecat, others) Warn me when sites try to install add-ons; Exceptions

[mitchell robin]

Hello,

In various linux distros such as LinuxMint (18.3) and Trisquel (8,0), the Firefox (?) and derivatives, such as IceCat (52.6.0) exhibit a condition whereas:


When the 'remove all sites' option under "Warn me when sites try to install add-ons" "Exceptions", is chosen, https://addons.mozilla.org and https://testpilot.firefox.com (which are there by default) return under "Exceptions" when the browser is restarted.

(Aside: Seamonkey's 'exceptions under 'permissions' are at least able to accept 'block' option in the "Data Manager".)

Thanks.

[c***@abwesend.de]

I have this also in FF 52.9. Though I consider it common and expectable that software providers whitelist their own domains for phoning home, or even domains of associates/partners. I hadn't been even able to switch off auto-updating in uMatrix in its preferences, which I found very odd considering the nature of the extension.
 
My solution: I block all firefox related domains not only by host file, but additionaly I block Mozialla IP ranges in iptables, plus I set any hyperlink from about:config to http://0.0.0.0[https://deref-gmx.net/mail/client/5WL2nsNuYlE/dereferrer/?redirectUrl=http%3A%2F%2F0.0.0.0]. And it is also educating to see there the amount (and context) of configured hosts, the browser connects by default.
 
Extension updating / downloading I do manually only.

--
http://