Re:Cisco's Talos team analysis of WannaCry worm
by Franciscouzo on Saturday May 13, 2017 @01:13PM
(#14331936)
Except that is not true, there's BadUSB (https://github.com/brandonlw/Psychson), which updates the firmware of some common USB drives to make it do whatever your want (such as emulating a mouse/keyboard).
Autorun hasn't been a thing in ages.