Stuxnet is a malicious computer virus, first identified in 2010, that targets industrial computer systems and was responsible for causing substantial damage to Iran's nuclear program, as well as spreading across the world. The virus is believed by many experts to be a jointly built American-Israeli cyberweapon, although no organisation or state has officially admitted responsibility. Zero Days covers the phenomenon surrounding the Stuxnet computer virus and the development of the malware software known as "Olympic Games." It also examines the follow-up cyber-plan entitled 'Nitro Zeus,' showing how the United States has opened the Pandora's Box of cyberwarfare.