The Washington Post reports that documents provided by Edward Snowden show that the NSA has collected “millions of contact lists from personal e-mail and instant messaging accounts around the world, many of them belonging to Americans.” The emails were intercepted from different points around the world. We’ll discuss the implications with Bruce Schneier, an author and expert in security technology. Schneier has testified before Congress. He publishes the free monthly newsletter Crypto-Gram. His latest book is Liars and Outliers. (Photo: Flickr/{Andrea})