Boeing is committed to designing airplanes that are both safe and secure -- meeting or exceeding all applicable regulatory requirements for both physical and cybersecurity.
Boeing has put in place, and demonstrated to the airlines and regulatory agencies, the appropriate cybersecurity safeguards, both hardware and software.
IFE systems on commercial airplanes are isolated from flight and navigation systems. While these systems receive position data and have communication links, the design isolates them from the other systems on airplanes performing critical and essential functions.
Roberts told CNN that he's tried connecting to flight systems 15 to 20 times and seen all sorts of things, such as the flight management system. I have contacted Roberts directly for more information and will update, should I hear.