Last year, a Russian researcher, under the pseudonym Dark_Purple, introduced a prototype USB Killer 2.0 USB drive, capable of “frying” virtually any device equipped with a USB port in a matter of seconds. The researcher described the operating principle of the device as follows: “When connected to the USB port, the inverting DC / DC converter starts up and charges the capacitors to a voltage of -110V, when this voltage is reached, the DC / DC switches off and the field-effect transistor opens through which -110V is applied to the USB signal lines interface. Then, when the voltage across the capacitors drops to -7V, the transistor closes and DC / DC starts. And so in the cycle until everything breaks through. ”At the end of August 2016, a certain Hong Kong company entered the market with the USB Kill project, within the framework of which it launched the USB Killer device, as well as the Test Shield device, which can be used with“ flash killer, \Both gadgets are available for order, and delivery is worldwide. USB Killer can be purchased for 49.95 euros, while Test Shield will cost 13.95 euros.