Firefox: About Your Rights
www.mozilla.org

When you upload or input information through Firefox, you hereby grant us a nonexclusive, royalty-free, worldwide license to use that information to help you navigate, experience, and interact with online content as you indicate with your use of Firefox.

Also Firefox now has a Acceptable use policy https://www.mozilla.org/about/legal/acceptable-use/

  • @PetteriPano
    -1•9 hours ago

    Companies can go ahead you even without those two points.

    But now Firefox has a leg to stand on when new standards would be forced upon them to prevent piracy and kiddie porn.

    The age old argument of “Your browser is being used to bankrupt the movie studios and abuse children. What are you going to do about it?”