We should not have WiFi systems that communicate with the computers that control the aircraft. Period. There is no such thing as “enough security” for that. Anything running on software can be hacked/compromised.
There has to be a physical moat. No form of wireless data connection should exist to the flight computers PERIOD. PERIOD!!! If you need to input flight info, you should have to do it on another computer, whether that instrument is in the panel or hand held and that should have to be manually uploaded to the system by a human.
What I’m describing doesn’t have to be what you think. It can be as simple as a dedicated computer with wifi in the panel that only makes physical connection to the aircraft flight computer when you push a button or turn a knob to upload.
That way, NOTHING known to man can compromise the flight computer info during flight unless you are in the cockpit.
It’s common sense.
The very thought that ANY data systems in an aircraft are in any way connected to the passengers or outside the aircraft is unfathomable.
“...is unfathomable”
Using Patton’s logic, “therefor I believe it is true!”