Chinese hack of telecommunications companies under investigation, NSA chief says

SEA ISLAND, Ga. — The director of the National Security Agency said Sunday a Chinese hack of three major telecommunications firms is under investigation, but it remains “premature” to discuss the case. Air Force Gen. Timothy Haugh said his command would work closely with other government agencies and private companies “to really understand what has happened.” “I think it’s premature for us to talk about this specific case. We’re really at an initial stage,” Haugh told a small group of reporters here at a conference organized by the Cipher Brief...