What happens when you launch your browser for the first time:
Interesting read. I was kind of disappointed to learn that:
"The http://mozilla.org tab discussing the importance of Privacy loads in the background, bringing along with it the Google Tag Manager and Google Analytics. Hello, Google."
This is why I always block internet access to Firefox (or any internet app) until I have it fully configured and restricted.
@kot nowadays that seems to be a good practice.
This is a personal and private instance.