GNU/Linux systems are immune to viruses is anything but myth. Viruses, malware are programs with destructive intentions and can be installed on any machine throgh various means. It becomes extremely easy if an attacker/cracker (not hacker for god's sake, you idiot) gets physical access to the machine. You can install a malicious code on your own computer if you want.

Now this is interesting: with the arrival of a demand for some $4.5 million in damages, one of the founders of Pirate Bay has come up with an innovate method of paying it and attacking the music industry at the same time.