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'''Edward Snowden''' is a former [[Central Intelligence Agency]] (CIA) employee who worked as a contractor for the [[National Security Agency]] (NSA). In June, 2013, he instantly became known as [http://www.guardian.co.uk/world/2013/jun/09/edward-snowden-nsa-whistleblower-surveillance one of America's biggest whistleblowers] when he released classified material on top-secret NSA programs including the PRISM surveillance program to ''[[The Guardian]]'' and ''[[The Washington Post]]''. On June 9, 2013, journalist [[Glenn Greenwald]] revealed, with his permission and full cooperation, his identity as the source of super-secret information on US digital data collection.