It is in the slides the article links to: http://www.theguardian.com/world/interactive/2013/jul/31/nsa-xkeyscore-program-full-presentation http://www.theguardia

It is in the slides the article links to: http://www.theguardian.com/world/interactive/2013/jul/31/nsa-xkeyscore-program-full-presentation http://www.theguardian.com/world/interactive/2013/jul/31/nsa... Slide 16: "Show me all PGP usage in Iran"