Hackers penetrate U.S. defense contractors’ security networks

Hackers penetrate defense contractors’ networks

Reuters is reporting that unknown hackers have broken into the networks of Lockheed Martin and other major defense contractors and may have gained access to sensitive information on present and future weapons systems.

Reuters had reported earlier on Friday that "Lockheed Martin, the Pentagon's No. 1 supplier, is experiencing a major disruption to its computer systems that could be related to a problem with network security." The disruption began last Sunday, when security experts detected an intrusion.

According to an anonymous source with knowledge of the attacks, the hackers used data stolen in March from the RSA security division of EMC Corp. to duplicate security keys which gave them access to the networks.

"You have no idea how many people are freaked out right now," one security expert told Reuters, explaining that the RSA keys could no longer be considered fully secure.