So please...
...don't build SCADA systems on platforms you don't understand. Please get one of the 20 Windows experts out there if you want to run it on Windows, otherwise get something you can scale down to the minimal amount of code you need.
Stuxnet wasn't a game changer. If it was we'd learn from it and stop building systems so complex we don't understand. Instead people are happily using OPC and even think about "SCADA in the Cloud". Feel free to guess what cloud that is. Hint: It's named after a colour and starts with A. (I'm not making this up, google yourself)