[chromaton]

The Stuxnet worm.

[ibrault]

Does this one really count? It's common knowledge that this was developed by NSA's TAO along with Israel.

EDIT: although I do agree, I remember first reading about Stuxnet when it was first discovered, before evidence of its origin was known, and being absolutely fascinated

[hacdaddy]

https://malicious.life/ Did a great 3 parter on Stuxnet, Flame, Duqu. His who series is fantastic really (esp season 1).