Found a flash drive?  Throw it away.

This is why you never trust a USB drive you find lying around.  This is just a simple USB device specially configured to fry your system in a few seconds.  Plain and simple.

"In our tests, over 95 percent of devices are affected by a USB power surge attack. Almost all consumer-level hardware fails when tested against the USB Kill. The most frequent outcome is the complete destruction of the device (laptops, tv, telephones, etc). Almost all consumer-level hardware fails when tested against the USB Kill," the developers of the USB Kill say.

Full article here.