content: This. I mean, they're not providing proof. Further, they can't claim one is more private than Firefox. Chrome/IE/Safari could be sending data back to their respective homes without our knowledge. Firefox is open source, so can't really phone home without us knowing (yes, no one audited every line of code, but still, you can find out). Waiting for them to prove it though. Edit: seems this is a sensationalized title. The other post about this says "we wanted to focus on Browsers that have made big improvements in security this year", doesn't mean Firefox is insecure, just haven't changed much security in '15.