A Russian researcher has developed a computer-frying USB Killer pendrive. The USB killer drive is able to effectively destroy sensitive components of a computer when plugged-in. Hackers can turn a remote computer into a bomb and explode it to kill someone, just like they do in hacker movies. An attacker can exploit SCADA vulnerabilities and put it into an unstable state, such as the Stuxnet worm, which was designed to destroy centrifuges at the Nuclear facility and all this started from a USB drive.
Source: https://thehackernews.com/2015/03/killer-usb-explode-computer.html