The problem with that analogy (and ICS in general) is that indeed the bank robber is outside the bank with a crow bar most of the time (harmless enough), but th

The problem with that analogy (and ICS in general) is that indeed the bank robber is outside the bank with a crow bar most of the time (harmless enough), but the safety deposit boxes are poking through the back wall into the alley. The archaic, closed nature of these systems (and their small user bases and tremendously long refresh cycles) is precisely the source of their vulnerabilities, not a fount of "security through obscurity."