How to Configure Firefox for Privacy and Security. There is an everlasting battle between Internet browsers: Internet Explorer, Google Chrome, Mozilla Firefox, Apple Safari, Opera, Microsoft Edge, opera, Brave plus a number of other less famous browsers and the infamous Netscape that faded into obscurity. Mozilla has made it a goal to take your internet privacy and security and make that a priority for creating their browser. Learn how to secure Mozilla Firefox to protect your privacy online and offer a more secure way of browsing the Internet.