The 10 Biggest Revelations From Edward Snowden's Leaks

One year ago, the Guardian published its first bombshell story based on leaked top-secret documents showing that the National Security Agency was spying on American citizens

At the time, journalist Glenn Greenwald and the Guardian never mentioned that they had a treasure trove of other NSA documents, nor that they came from one person. Then three days later, the source surprisingly unmasked himself: His name was Edward Snowden.