In an effort to spur deeper cooperation with the technology industry in the area of cybersecurity, Defense Secretary Ash Carter announced today that earlier this year Russian hackers accessed one of the Pentagon's unclassified networks, but were beaten back by a U.S. cyber team. Carter said the incident is being declassified to signal the Defense Department's commitment to increase cybersecurity transparency. The revelation also coincided with the release of the Pentagon's new cyber strategy . "They'd discovered an old vulnerability...