It is possible to give your USB key or flash disk a self-launching behaviour like a CD or DVD, but this poses a substantial risk because you may execute a malicious application such as a virus or worm. USB Guardian can identify which USB flash drive is inserted and detect dangerous files. It reduces the risk of infection by blocking threats and isolating the autorun.inf file. It then determines
dangerous files and removes them. Guardian USB is totally free and compatible with all versions of Windows.