In June 2013, computer specialist Edward Snowden disclosed the extent of the surveillance practices of the U.S. and British intelligence services. Snowden, who worked for a government sub-contractor and had access to confidential documents, later exposed more targeted surveillance, focusing on the telecommunications of world leaders and diplomats of allied countries. Activists, governments and international bodies have taken issue with the Obama administration, as the newspapers The Guardian and The Washington Post have revealed the extent of the surveillance. The main player in this vast surveillance operation is the highly secretive National Security Agency (NSA) which, in the light of Snowden’s revelations, has come to symbolize the abuses by the world’s intelligence agencies. Against this background, those involved in reporting on security issues have found their sources under increasing pressure.