> Just try setting your Firefox browser to a blank page with no requests on startup and watching the Wireshark log if you think otherwise
OK, so I just did this, and I don't really see what the issue is. Looking at Wireshark, I see requests for:
* detectportal.firefox.com, which is used to detect whether you're connected to a captive portal network and need to sign in before you can connect to the internet. As far as I'm aware, no personal information is transmitted as part of this request, and there's apparently a pref to disable it [0]
* A couple of requests for OCSP certificate validation [1], which seems like a useful feature, and is also pretty easy to disable if you really don't want it.
* A request to download.mozilla.org and another one to download.cdn.mozilla.net, which looks like it's checking whether an update is available.
I don't really see a problem with any of these?
[0] https://bugzilla.mozilla.org/show_bug.cgi?id=1307867
[1] https://en.wikipedia.org/wiki/Online_Certificate_Status_Prot...