It used to be that Apple hardware was thought of being impervious to viral attacks, and while Apple's various OS systems are a lot more secure than Microsoft Windows, there are still lots of possible ways to screw with your Mac, and now your iPod.
Yes, I said your iPod.
As reported on ITWire, Kaspersky Lab has discovered the first iPod virus, Podloso. More accurately, it's a "proof of concept virus" that has has the characteristics of a Trojan Horse and affects iPods running Linux. Even though the chances of this are pretty slim due to the sheer scarcity of iPods running anything but iTunes, it still exists.
What's worse is that while Podloso isn't loaded with malware, it proves that it is possible to create code that would not only screw with your iPod, but whatever it's docked to, thus, as the ITWire article states,renewing calls for iPods & other MP3 devices to be banned from workplaces. The overwhelming majority of iPod users don't have much to worry about...unless hypothetically they're illegally downloading music (Heaven forfend!). As most Apple tech geeks would dismiss this, be wary about how you use your iPod.