Bit9

Even music players are a potential vector for malware. Apple confirmed that they shipped a "small number" of video iPods with the RavMonE.exe virus, which affects Windows. You can read Apple's statement here. It's not clear how the virus made its way onto the iPods and Apple isn't telling. In any event, removable devices of any kind can easily carry malware, whether it's been installed deliberately or accidentally, so caution is always advisable.