American bestselling author, journalist and documentary producer widely noted for his writing about United States intelligence agencies, especially the National Security Agency (NSA). The New York Times has called him "the nation's premier journalist on the subject of the National Security Agency" and in a lengthy profile The New Yorker named him "the NSA's chief chronicler." Bamford has taught at the University of California, Berkeley as a distinguished visiting professor and has written for The New York Times Magazine, The Atlantic, Harper's, and many other publications. In 2006, he won the National Magazine Award for Reporting, the highest award in the magazine industry, for his writing on the war in Iraq published in Rolling Stone. He is also an Emmy nominated documentary producer for PBS and spent a decade as the Washington investigative producer for ABC's World News Tonight. In 2015 he became the national security columnist for Foreign Policy Magazine and he also writes for The New Republic. His most recent book, The Shadow Factory: The Ultra-Secret NSA From 9/11 to the Eavesdropping on America, became a New York Times bestseller and was named by The Washington Post as one of "The Best Books of the Year." It is the third in a trilogy by Bamford on the NSA, following The Puzzle Palace (1982) and Body of Secrets (2001), also New York Times bestsellers.