Russian Hackers Stole NSA Data on U.S. Cyber Defense

Hackers working for the Russian government stole details of how the U.S. penetrates foreign computer networks and defends against cyberattacks after a National Security Agency contractor removed the highly classified material and put it on his home computer, according to multiple people with knowledge of the matter.

.. The hackers appear to have targeted the contractor after identifying the files through the contractor’s use of a popular antivirus software made by Russia-based Kaspersky Lab, these people said.

.. The Kaspersky incident is the third publicly known breach at the NSA involving a contractor’s access to a huge trove of highly classified materials. It prompted an official letter of reprimand to the agency’s director, Adm. Michael Rogers, by his superiors, people familiar with the situation said.

.. Kaspersky software once was authorized for use by nearly two dozen U.S. government agencies, including the Army, Navy and Air Force, and the departments of Defense, State, Homeland Security, Energy, Veterans Affairs, Justice and Treasury.
.. For years, U.S. national security officials have suspected that Kaspersky Lab, founded by a computer scientist who was trained at a KGB-sponsored technical school, is a proxy of the Russian government, which under Russian law can compel the company’s assistance in intercepting communications as they move through Russian computer networks.
.. All antivirus software scans computers looking for malicious code, comparing what is on the machine to a master list housed at the software company. But that scanning also gives makers of the software an inventory of what is on the computer, experts say.

“It’s basically the equivalent of digital dumpster diving,”

.. Kaspersky is “aggressive” in its methods of hunting for malware, Mr. Darché said, “in that they will make copies of files on a computer, anything that they think is interesting.” He said the product’s user license agreement, which few customers probably read, allows this.

.. “You’re basically surrendering your right to privacy by using Kaspersky software,