“This was obviously the first, biggest, and most sophisticated example of a state or two states using a cyber weapon for offensive purposes,” says New York Times national security correspondent David Sanger in Zero Days. He’s talking about Stuxnet—an elegant, dense, and massive piece of malware. First discovered via an “epidemic of computer shutdowns” in 2010, eventually it was recognized as something far greater: a powerful, covert American and Israeli cyber attack on an Iranian nuclear facility…