
I have little idea about Linux or what it is. But, I do know there are users here who use it. For that reason, I'm posting this piece.
Linux is a rock-solid computing platform, but it’s not indestructible or impervious to attack. By keeping an eye on your system and using appropriate defensive measures when warranted, you can ensure that your Linux PC (and the Windows PCs you share files with) stays squeaky clean of digital creepy crawlies.
Full piece w/links @ Why Linux users should worry about malware and what they can do about it