Autothrust Blue
PCU M/Y SPIRIT OF MELLIE
Don't get me wrong, I do believe some maniac out there with a MANPAD would shoot at a civilian jet, or do any other manner of crazy things. My innocence on that front is pretty much lost, growing up in our post-9/11 world. However, I don't see this as the amazing world-ending vulnerability that the business aircraft community does. I'm very interested in protecting the security and safety of the system and not especially interested in allowing people to hide.I can't go much deeper into the weeds on this without breaking into the information you don't get to know without clearances.
Suffice to say yes the US Military and DIA have been and are continuing to look at live feed real time apps out there like flight tracker etc as huge security risks due to the increased probability for intercept they give terrorists and other non state actors.
You guys laugh, but there are a couple real no no kidding incidents that have happened where people using these systems to track and build a kill chain have been recorded.
Of course some of you are probably like "nobody is gonna shoot at an airliner, that's just stupid."
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My objection to your argument is twofold:
(1) please stop patting us civilians on the head with vague references to classified information, as I'm rather tired of hearing "trust us, be scared," (this refrain is getting very, very old, and locking up information doesn't help the rest of us combat the threat - see the 9/11 Commission Report) and
(2) I consider that sort of threat against a business aircraft to be orders of magnitude less likely than either a leak of competitive sensitive information or something happening at an arrival airport to the principals aboard said aircraft. Low technology wins every time.
It's difficult - near impossible - to hide an aircraft operation. Technology like ADS-B makes it harder, but it doesn't change the fundamental nature of the problem: you are in an airplane that people can see.
I've got no problem with corporate airplanes driving around under anonymous call signs and such things, but the fundamental way ADS-B works is that it broadcasts a whole ton of information to the world. Encryption won't do jack about that, as everyone will have the keys to decrypt it, and it adds an arguably unnecessary level of complexity. I've little confidence that avionics vendors would do it "correctly" anyway, as encryption and security are hard, so...
This is a broadcast-based system. It's very difficult by its very nature to hide from the world when you are broadcasting your position (etc.) to the world.
So, I suppose we can either fundamentally redesign ADS-B, or we can have a cold, honest, rational and transparent discussion about the risks (not saying there aren't any) and adopt other mitigating strategy, and accept the remaining risk should it be judged acceptable.