Days after the United States acknowledged conducting warfare over computer networks for the first time, Defense Secretary Ashton B. Carter took the stage at a major information security conference in San Francisco.
The use of cyberweapons against the self-declared Islamic State had turned the conference audience's online world into the newest battlefield, with potentially far-reaching consequences for the future of the Internet. So it was not surprising that Carter was asked about the new campaign.
"Well, I'm not going to be very public about the details of it," he said.
Carter's stance drew laughter in the conference hall. But after a decade of classified...