USB Guardian is a special software application which prevents your computer to get Infected with nasty viruses an worms like Conficker (aka Downandup, Downadup and Kido!) which have spread already to over 9 milion computers.
USB Guardian allows you to safely enjoy file sharing using just an USB thumbdrive for copying the files . Movies, mp3s, documents and pictures can be copied from one computer to another without worrying of getting infected with worms and viruses trough USB drive.
USB thumbdrives have become a comodity and this fact is actively being exploited by criminals who have developed special viruses and worms which infect USB storage devices like thumbdrives, cameras and even mobile phones.