Estimates vary, but generally it is believed that there are 100 to 500 Linux viruses out there. The tiny number of Linux viruses that do exist have never resulted in a significant outbreak. In comparison to the plethora of viruses and worms in Windows-based platforms, the volume of Linux viruses is insignificant. So this leads us to two questions: why are there so few Linux viruses and are Linux anti-virus tools necessary?

Just because you use Linux, it doesn't mean your computer doesn't have viruses or worms. Virus is a catch-all phrase, and BitDefender's designed to catch them all - from executable viruses, script viruses, macro viruses, to backdoors, trojans, spyware, adware, diallers, and more.

CodeWeavers has released the latest version of its CrossOver software for Mac and Linux users. If you want to try working without Windows but can't live without a must-have Windows app, CrossOver just might be the answer.

Often, even if we do catch a virus, it's not so difficult to eradicate it using installed anti-virus—but if your system has been crippled, try using Linux to scan the drive for viruses instead. As any Linux veteran knows, one of Linux's greatest uses is fixing unbootable drives—recovering files, deleting files, and even killing viruses.

This tutorial shows how you can install and use F-PROT Antivirus on an Ubuntu Feisty Fawn desktop. Although there aren't many Linux viruses out there, this can be useful if you often exchange files with Windows users - it can help you to not pass on any Windows viruses (that don't do any harm to Linux systems) to Windows users. F-PROT Antivirus for Linux is free for home use.

Wine allows users to run Windows programs natively under Linux without paying a dime. However, there's a tiny problem: programs running in Wine don't look so great.

By itself Wine is very usable but you need a fair amount of expertise or lots of time to get your favourite Windows application running correctly. This is why we have companies like Bordeaux Group and CodeWeavers who sell commercially supported Wine version or management tools that make our lives a little easier.

In the most part, Linux is engineered in a fashion that makes it hard for viruses to run. Also, because more PCs currently run Windows, it is more worthwhile writing viruses for the Windows platform. However, there are many reasons you might want a virus scanner on your Linux PC:

There's a ridiculous rumor running around the net that Linux is so inherently secure -- or so securely obscure -- that you shouldn't even bother running an antivirus on it. But frankly, that's just not true.