Turn on Windows Firewall or use other firewall software. This is to prevent the access of undesirable
Make sure the computer is getting the latest updates from the Windows system. To simplify use automatic updates of the system such as "Automatic Updates". Or it could also download the latest patch from the Microsoft website.
Use antivirus software that are always updated with the good. This is to make it easier to variants of the new malware.
Restrict access to administrator access. For users of Windows 7 and Vista, make sure the UAC...