I'm not sure that I fully captured it. There are a lot of methods of managing communications so that they are reliable and cannot be intercepted, cannot be interfered with or jammed. There are frequency agile, jumping, hopping, techniques that apply really to the control of aircraft as well, but those are not foolproof.
The whole thing comes to being able to hack...the kinds of capacities we find in the Internet. I don't think airborne communications are going to be very much different from that.