WASHINGTON – Hackers launched a "significant and tenacious" cyber attack on Lockheed Martin, a major defense contractor holding highly sensitive information, but its secrets remained safe, the company said Saturday.
Lockheed Martin, the Department of Homeland Security and the Pentagon confirmed that the contractor's information systems had come under attack. Lt. Col. April Cunningham, speaking for the Defense Department, said the impact on the Pentagon "is minimal and we don't expect any adverse effect."
Still, the concerted attempt to breach the contractor's systems underscored the risk to the nation's critical defense data. Chris Ortman, Homeland Security spokesman, said his agency and the Pentagon were working with the company...