Exclusive: Yahoo secretly scanned customer emails for U.S. intelligence - sources

By Joseph Menn SAN FRANCISCO (Reuters) - Yahoo Inc last year secretly built a custom software program to search all of its customers' incoming emails for specific information provided by U.S. intelligence officials, according to people familiar with the matter. The company complied with a classified U.S. government directive, scanning hundreds of millions of Yahoo Mail accounts at the behest of the National Security Agency or FBI, said two former employees and a third person apprised of the even