I highly recommend reading the book "Countdown to Zero Day". Stuxnet was incredibly sophisticated and explicitly targeted at Iranian nuclear enrichment facilities.

https://www.amazon.com/Countdown-Zero-Day-Stuxnet-Digital/dp...

You should read "Countdown to zero day"[0]. Some of the measures that were taken exceeded what anyone in Hollywood could ever imagine.

[0]: https://www.amazon.com/Countdown-Zero-Day-Stuxnet-Digital/dp...