In 2008, a Dutchman played a crucial role in the United States and Israeli-led operation to sabotage Iran’s nuclear program. The then 36-year-old Erik van Sabben infiltrated an Iranian nuclear complex and released the infamous Stuxnet virus, paralyzing the country’s nuclear program. The AIVD recruited the man, but Dutch politicians knew nothing about the operation, the Volkskrant reports after investigating the sabotage for two years.
Dutch source: https://nos.nl/artikel/2504114-nederlander-saboteerde-atoomcomplex-in-iran-den-haag-wist-niets
I remember reading how tailored this virus was to the exact machines Iran was using in refinement, specifically the centrifuges. I assumed that it had propagated like any other virus, finding its way in from some outside infection. Looks like it was from the inside out.