With millions of different hackers out there writing all sorts of nefarious doodads, no, I don't. But I know this: My friends in IT put unprotected PCs outside our corporate firewalls from time to time, and it rarely took more than an hour for them to attract at least one piece of malware that would affect data on an unsupported OS.

They did this because we had many older machine control PCs in production running versions of Windows ranging from 98 to 2000 to XP, when XP was still supported. 98 and 2000 were not supported. Yet we had to run them because some of our equipment was no longer supported by the manufacturer, and there were no modern replacements for it. That is a rather dangerous position to be in, but when you have no other market alternatives, you find ways to run the equipment off network.