Everyone is about to get a little bit more careful about what they stick inside their computer after reading this. Hopefully, you already know not to insert a random USB that you find on the ground into your laptop. Random USB drives could be used for phishing or viruses, and now they could be used as a bomb. Meet the USB Killer. It is designed to look like an innocuous flash drive, but inside it packs quite a punch. This little guy is designed to completely fry your laptop from the inside out.