It was straight out of your favorite spy novel. The US and Israel felt threatened by Iran's totalitarian-esque government and its budding nuclear program. If this initiative wasn't stopped, there was no telling how far the growing conflict could escalate. So militaries from the two countries reportedly turned to one of the most novel weapons of the 21st century: malware. The result was Stuxnet, a powerful computer worm designed to sabotage uranium enrichment operations.