>If your CAN nodes are all authenticated to one another, it's a lot harder to hack.
The problem with that is now how do you do the legitimate good things you want to do? Of course, these kinds of locks usually have their own problems and usually only keep "honest folks" out.
If your CAN nodes are all authenticated to one another, it's a lot harder to hack.
The downside is that they're a lot harder to hack, in the good sense of the term.