at construction sites in our area seem to have truly lousy security.
< WARNING FOX NEWS LINK click with caution and reality filters on please >
I don't imagine that overall security of this type of device is that great. I suspect that the management of the devices is made as simple as possible, and as such is likely easy to violate. I can see things like this managing to be used to cause issues within a general population, by distributing misinformation, misdirecting volumes of traffic flow about etc. Not sure what else could be done with those.
Youtube is quite the misinformation zone, as is facebook and other things of that ilk. But (see the fox news note above) most modern, popular media are full of equal amounts of crap. And since we've removed *logical thought* from the edumastraction system in most of the western world, THAT becomes a problem. Hopefully there are enough of us about with clue by fours when the airborne fecal matter impacts the rotary aeration devices.
As for hacking infrastructure for military purposes I *rather* suspect that *both* sides will be all over that in any conflict, just so that they can propagandise the results, either way. (i would NOT put it past the military in any western country to have back doors into the critical infrastructures of their locale already). Given that the US already has a cyber military command centre, I'm not surprised that NATO validated its existence.
</considers creating a "snopes" bunker for the coming downfall of civilization, something like the Motie museums>