There are 10 major ways to protect your PC. Disable Autorun, in Windows. Make sure that your system is up to date, by setting automatic updates. Always use a log on for your computer that does not have administrative privileges. Use different passwords, and change your passwords on a regular basis. Don't use simple passwords. Be careful of using links sent to you via email. Never disclose your sensitive information in public forums: e.g. social networks. Encrypt sensitive data on your computer. Use a personal firewall, in addition to security programs. Not all Wi-Fi has been created equally. Some are just for extracting your data. Don't use pirated software or cracked software. They often contain viruses.