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

[cotw]

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.