Documentary filmmaker Laura Poitras, along with columnist Glenn Greenwald, helped Edward Snowden expose the NSA. Peter Maass, an investigative reporter, decided to write a profile of Poitras for the upcoming issue of The New York Times Magazine. In the course of reporting his profile of Poitras, Maass was able to conduct an encrypted question-and-answer session with Edward Snowden, for which Poitras served as an intermediary. Here Maass tells the story behind Snowden's leaks and how he was able to communicate with the international fugitive.