According to findings by researchers Karsten Nohl and Jakob Lell, USB security may be profoundly broken, with no way around it.
Nohl and Lell have highlighted a flaw in USB devices which potentially offer hackers the ability to sidestep all currently known security measures used by a computer. Called the BadUSB exploit, the vulnerability allows hackers to meddle with the firmware which controls the functions of various USB plug-ins, such as mice, keyboards and thumb drives.