Nothing can guarantee the security of your computer, but there’s a lot you can do to help lower the chances that you’ll get a virus. It’s crucial that from the moment you turn your computer on; you have antivirus software installed such as Microsoft Security Essentials. You can continue to improve your computer’s security and decrease the possibility of infection by using a firewall, and following a few best practices.
Tip Because no security method is guaranteed, it’s important to back up critical files on a regular basis.
10 Ways to Prevent Computer Viruses