Firefox increasing rate since Firefox 1.0 was released on November 9, 2004, and Firefox had already been downloaded over one billion times. This number does not include downloads using software updates or those from third-party websites. They do not represent a user count, as one download may be installed on many machines, one person may download the software multiple times, or the software may be obtained from a third-party. In July 2010, IBM asked all employees (about 400,000) to use Firefox as their default browser. Firefox was the second-most used web browser until November 2011, when Google Chrome surpassed it. According
Pwn2Own $140,000 in prize money. Internet Explorer 11 on Windows 8.1 was successfully exploited by Sebastian Apelt and Andreas Schmidt for a prize of $100,000. Mozilla Firefox was exploited by Jüri Aedla, Mariusz Młyński, and George Hotz each independently, winning $50,000 each. An anonymous participant exploited Google Chrome; however, upon review contest judges declared this a partial win due to one portion of the presentation’s collision with a vulnerability exploited earlier in the week in the Pwnium competition. In 2015, every single prize available was claimed. In 2016, Chrome, Microsoft Edge and Safari were all hacked. Firefox did not even participate