Ellen Nakashima, Greg Miller and Julie Tate
Washington Post 
June 20, 2012
The United States and Israel jointly developed a sophisticated computer virus nicknamed Flame that collected intelligence in preparation for cyber-sabotage aimed at slowing Iran’s ability to develop a nuclear weapon, according to Western officials with knowledge of the effort.
The massive piece of malware  secretly mapped and monitored Iran’s computer networks, sending back a steady stream of intelligence to prepare for a cyberwarfare campaign, according to the officials.
The effort, involving the National Security Agency, the CIA and Israel’s military, has included the use of destructive software such as the Stuxnet virus to cause malfunctions in Iran’s nuclear-enrichment equipment.
The emerging details about Flame provide new clues to what is thought to be the first sustained campaign of cyber-sabotage against an adversary of the United States.