Purchase An Antivirus Program

• The most effective way to prevent malware is to install antivirus software. Many antivirus programs will protect your computer from hackers, viruses, malware, spyware, Trojan horses, worms, bits and rootkits. Some antivirus programs will also optimize your computer's performance, automatically back up your files, and supply you with parental control options. As of 2009, the two leading makers of computer security software are Symantec and McAfee. Both programs provide free virus scans but require you to purchase software for continued protection. There are, however, many free anti-virus programs.
  
  

Configure Your Firewall

• A firewall protects your computer by building a wall between your computer and the public (i.e. the Internet). Firewalls can be configured so they allow certain programs to pass through the wall while blocking others. Most operating systems (including Windows and Mac) come with a built-in firewall. However, firewalls can also be purchased from third-party software companies, including Symantec and McAfee.
  
  

Disable Windows Autorun

• The Windows autorun feature allows CDs and other software to play automatically when inserted into a drive. According to MajorGeeks.com, the autorun feature is commonly used to spread malware. This feature can be disabled using a simple code.
  
  

Avoid Dangerous Websites

• Keeping your computer safe from malware has a lot to do with the sites you chose to visit. One way to avoid visiting dangerous sites is to download McAfee Site Advisor. Once the program is downloaded, you will notice a small rating icon near each one of your search results. These icons are color-coded to alert you of sites that have been known to carry malware. McAfee visits thousands of sites thousands of times per day to determine the ratings it applies.