We can ensure this page stays updated with the most relevant information on how to help protect your PC.ĭepending on which operating system your computer is running, you can use either Windows Defender or Microsoft Security Essentials to get rid of malicious software and viruses. UPDATE: For the most relevant information on Microsoft Security Essentials, please visit the Microsoft threat detection information page. SSO solution: Secure app access with single sign-on.Identity & access management Identity & access management.App & email security App & email security.