As long as the systems controlling infrastructure (of any kind) are network accessible, they are internet accessible. Hence, they will be attacked.
Convenience always works to the attackers gain, and convenience is the name of the game for engineers and managers and support staff. Unless the system is physically isolated and protected and there is no kind of networking available, it is effectively crackable. Even if physically isolated, staff can still be bought.
Convenience always works to the attackers gain, and convenience is the name of the game for engineers and managers and support staff. Unless the system is physically isolated and protected and there is no kind of networking available, it is effectively crackable. Even if physically isolated, staff can still be bought.