There is no justifiable reason for these things to be integrated at all. Yes, it saves the mfr some $$, but people can DIE because of this stupidity.
As recent events have shown, the aviation industry hasn't integrated these systems securely - they're just harder to get to so it took a while before people started discovering their flaws - http://www.cnn.com/2015/05/17/us/fbi-hacker-flight-computer-...
Secure integration is not possible - the only right way for companies as inept as legacy auto makers to do this is for the systems to be separated.
There is no justifiable reason for these things to be integrated at all. Yes, it saves the mfr some $$, but people can DIE because of this stupidity.
As recent events have shown, the aviation industry hasn't integrated these systems securely - they're just harder to get to so it took a while before people started discovering their flaws - http://www.cnn.com/2015/05/17/us/fbi-hacker-flight-computer-...
Secure integration is not possible - the only right way for companies as inept as legacy auto makers to do this is for the systems to be separated.