Scary. I have a suspicion that many systems like this have little or not thought put into security. I may have to play Fallout soon as well after seeing this screenshot.
I suppose when you think about it. Many control systems are only attached to a potential outside source when a computer is attached to them, ie a laptop being plugged in. The laptop could then have internet access and instantly start sending tasty information out. A determined party would only need to find out (through linkedin even maybe?) who works at a plant and then the fun could begin.