There was an interesting talk at DEFCON this year about the FAA's Privacy ICAO Address (PIA) system, and potential attacks: https://www.youtube.com/watch?v=6-8z

There was an interesting talk at DEFCON this year about the FAA's Privacy ICAO Address (PIA) system, and potential attacks: https://www.youtube.com/watch?v=6-8z0z1swmE https://www.youtube.com/watch?v=6-8z0z1swmE