I own a couple of these. with just a few thousand dollars and not much smarts you could conceivably stage a denial of service attack or other hack against a WiFi network that isn't connected to the internet. That means military nrtworks, dam control networks, smart power meters, power grid networks, hispitals, etc. The US is woefully under prepared for a state sponsored cyber attack of this nature, or really of any nature. We need to up our cyber wafrfare readiness yesterday.