Prolly for the same reasons someone might want to use AmigaOS, although, not likly.
The amount of comments people make about MS's security are ridiculous to say the least. Sure people can say that its not secure, not stable and not something else, but then Microsoft have the largest user base of any software in the world, so of course you'r gunna find more bugs and more complicated softwareis going to be written for it that has a great chance of bringing the system down. When people compare Windows to linux or AmigaOS they assume that linux and AmigaOS are more secure and more stable than windows but how can people make these assumptions? Based on the fact that major flaws just havnt been found yet? Thats stupid to say the least.
I believe you missed the point. I wouldn't want to see any of the systems mentioned in an ATM. They are simply to complex and failure prone. An ATM does nothing that requires more computing power than a C64. The only way to make ATMs reliable and secure is to minimize the complexity of the system. To stick a full feature PC running Windows ( or AmigaOs or linux ) in one is an effective way to maximize the complexity.
The reason why windows is constantly cracked and etc is because there exists known bugs that anyone can utilise to their advantage and MS has the wider coverage amoung script kiddies so their MS are likly to be the most targeted OS.
Couldn't agree more, so why would you want to use it in an ATM?
-Peter
