Reverse engineer how something like this was created and it is mind boggling. The initial intelligence gathering of the target systems, developing the plan of attack, recruit experts on the siemens hardware and physicists to explain the things that could go wrong, development and QA must have been grueling, since the expense of failure is so great! Never mind the deployment and monitoring to see if it was effective! They probably recreated the entire environment to test different ways to cause havoc.
Stuxnet recorded various data points while the cascades and centrifuges operated normally, in order to replay this data to operators once the sabotage began. They must have had a working system to test this on?! The budget for something like this is probably in the tens of millions if not more. The HR requirement must have been pretty large too. Analysts to gather information, managers, programmers, qa, siemens hardware experts, physicists, deployment, monitoring, etc, etc.
Stuxnet recorded various data points while the cascades and centrifuges operated normally, in order to replay this data to operators once the sabotage began. They must have had a working system to test this on?! The budget for something like this is probably in the tens of millions if not more. The HR requirement must have been pretty large too. Analysts to gather information, managers, programmers, qa, siemens hardware experts, physicists, deployment, monitoring, etc, etc.