@"Let them burn then" = Moron
I hope you don't think that connecting these systems DIRECTLY to the outside world is a good idea, has nobody heard of abstracting away direct access to limit severely what can be done remotely?
What about the following setup
SCADA system is on a network, the ONLY connection to the internet, is through a server who's job is ONLY to read the data, never to set, change, upload. It has a web server, which every 1 second, outputs through a WRITE ONLY port, data from the system.
Don't allow incoming connections, a single attempt to open a different port, shuts down the server and locks out the internet, all TCPIP communications with the server are disabled.
Any data received on the port the SCADA is sending data out, will result in a network lockdown.
Then, preuse all the data you want, safe that you've just limited about 99% of all possible infections, what are you going to do now?
A single byte shuts down the connections and locks it down, requiring a reconnection by an engineer onsite.
So how are you going to hack, crack, infect that?
So, I dont think the OP is a moron, I think maybe you are.