Originally Posted by
triploss
What a hilariously misleading headline.
Misleading external radio signals is not "hacking airliner systems". That's providing bad inputs to aircraft systems.
If someone actually manages to hack into the avionics, in the conventional sense of gaining direct control of the system on board the aircraft, all bets are off, and you won't see pilots shrugging it off. That's a lot harder to achieve of course, and fortunately hasn't happened as far as we know. Nevertheless, the risk is always there with networked aircraft that can speak to the internet.
Considering that "hacking" started by providing an erroneous input into a phone system to use it for free, that is actually exactly the meaning of hacking. Nowadays it is more understood as a direct access and change of internal software, but that is in reality only a part of hacking. Usually there are quite a few other components to successful hacking, including social engineering, bad inputs and of course software agents.