that the software code was
intended to induce fluctuations in the rotational speed of motors, by taking over a power device known as a frequency converter.
“It’s an awful complex code that we are looking at,” ... The worm moves from personal computers to Siemens computers that control industrial processes. It then inserts fake data, fooling the computers into thinking that the system is running normally while the sabotage of the frequency converters is taking place. “It is obvious that several years of preparation went into the design of this attack,” he wrote.(
NYTimes)
If Israel is behind this, then it is commendable that they can carry out such a well-directed bellicose act without using violence or harming civilians.