VIDEO-Exclusive: Secret NSA Map Shows China Cyber Attacks on U.S. Targets - NBC News

NSA

Each dot represents a successful Chinese attempt to steal corporate and military secrets and data about America's critical infrastructure, particularly the electrical power and telecommunications and internet backbone. And the prizes that China pilfered during its "intrusions" included everything from specifications for hybrid cars to formulas for pharmaceutical products to details about U.S. military and civilian air traffic control systems, according to intelligence sources.

The map was part of an NSA briefing prepared by the NSA Threat Operations Center (NTOC) in February 2014, an intelligence source told NBC News. The briefing highlighted China's interest in Google and defense contractors like Lockheed Martin, and in air traffic control systems. It catalogued the documents and data Chinese government hackers have "exfiltrated" -- stolen -- from U.S. corporate, government and military networks, and also listed the number and origin of China's "exploitations and attacks."

The map suggests that NSA has been able to monitor and assess the Chinese cyber espionage operations, and knows which specific companies, government agencies and computer networks are being targeted.

The NSA did not immediately respond to repeated requests for comment.