There have been a number of Cyber attacks on both Airplanes and Airports, a number of them in the USA. At the moment we are behind the curve in Cyber Security, but all sides are rushing to close the gap. It is suspected that some of the aviation incidents in the past years that can not be explained are because of cyber attacks on board the planes. Keeping this quiet till fixes can be made are a reason they have not been divulged.
from CTI Consulting http://ift.tt/2tZJLdb