NSA leaked documents, analyzed by Der Spiegel and The Times, report that NSA has hacked Huawei network to demonstrate the link with Chinese PLA. US Government justified its activities as Hacking for National Security and to demonstrate that Chinese giant Huawei is responsible for Corporate Theft The US hackers targeted email servers of Huawei five years ago, in the 2009, searching for sensitive information. The hacking campaign conducted by the NSA was codenamed as Operation Shotgiant, it was arranged with the support of the CIA, the FBI and the White House intelligence coordinator.”]
Source: http://securityaffairs.co/wordpress/23355/hacking/nsa-hacked-huawei-network.html