Windows provides the most comprehensive security with Windows Defender, Firewall, and SmartScreen. One of the greatest things about Windows 10 is that it keeps getting better all the time. Updated security. So the best Windows ever always gives you the best experience possible. Even better, staying up to date is easy. Microsoft Edge is designed for Windows 10 and offers faster, safer ways to get more done, across your PC and your phone. And with Microsoft Edge now available on iOS and Android, you get a mobile web experience that’s personal, productive, and responsive.