The problem with creating Stuxnet, the world's most sophisticated malware worm, is that it could eventually go rogue. Which is precisely what has happened. The US- and Israeli-built virus has spread to a Russian nuclear plant — and even the International Space Station.
Stuxnet, the complex computer worm that nearly crippled Iran's still-functioning nuclear program, didn't just sprout from the ether. It was created, by Man, and was probably tested in Israel at the massive (and oft-unacknowledged) Dimona nuclear facility.