What Kind of Attacks Have Been Victimized?

We've seen attacks on these type of systems world wide. And if you can find a vonability or exploit these systems, potentially someone outside could take cantrol and do the same type of operations you have. The san frisco light rail ticketing system was hit by a piece of ransom ware. They ended up not paying the ransom and took the systems off line and gave free hides to every one. These are the type of attacks that are so, so dangerous, and truly not that difficult.