Auto flight systems are hardened, and inaccessible. They are made to survive electromagnetic shock, and are not part of a network. Not hackable. Period.
Really?
It's impossible to update the software once the thing ships?
There's no provision for maintenance and repair?
Granted, that would require a whole 'nother level of attack, not an outsider hacking in, but sabotage from within.
But I would argue that the religion of al taqiyya is quite capable of placing an agent anywhere.
Especially when they knew they were over the Alps.
Now they say they have lost the last several minutes of in flight data recording on data recorders specifically designed to capture and record the last several minutes on any in flight emergency
I could envision a problem with the pitot static system commanding a slow descent from the autopilot but for 8 minutes without communication?