Windows 8 comes with built-in antivirus software as part of the updated Windows Defender program. However, if your PC manufacturer included a third-party antivirus program with your computer, Windows Defender may be disabled. Either way, make sure you have some form of antivirus program installed and enabled. And if you're considering a commercial antivirus suite, compare the different security suites and choose one that offers good protection--our recent security suite roundup is a good place to start.
We've discussed some security concerns with Windows 8 and how to combat them. Remember, in order to use the new Secure Boot feature, you need to purchase a new system that is Windows 8--certified, or make sure that your current system supports it before upgrading from a previous version of Windows.
If you log in to Windows using a Microsoft account, take the extra precautions I've described to secure your data. Use separate and unique strong passwords for both the Microsoft account and the email account you use. Don't store sensitive files in your SkyDrive online storage account. And keep your Microsoft account up-to-date with your mobile number.
Even though your Windows 8 PC might come with the built-in Windows Defender or a third-party antivirus program turned on, compare your options and choose one of the better antivirus programs.