http://spywarcbzke2e6skl7wjwtmmnrkslue24cld6kfcufjhhwxtceogmuad.onion/articles/firefox.html
Its developers have earned it a reputation for being a "privacy and security-based browser, respecting the user" — but is it justified, or just marketing? In fact, over the years they have made several anti-privacy (and generally anti-user) decisions, but this article will focus exclusively on spying. Version tested: 52.5.0, with the default settings.