Thanks so much! I was just reading https://www.yahoo.com/entertainment/revealed-how-a-secret-du... which says the same thing: an Iranian mole was crucial for Stuxnet, smuggling a USB stick into the airgapped facility.

I wonder what the calculus is like on whether to be an Iranian mole. Either the Israelis were blackmailing them into cooperating, or they're offering some very lucrative rewards, or the Iranian is doing it for some other reason (e.g. personal beliefs, or maybe just "being a super{hero,villain} for fun".)