The US Government was publicly accusing Chinese electronics manufacturer Huawei of espionage from the past few years. Operation Shotgiant was conducted with the involvement of the CIA, White House intelligence coordinator and the FBI; aimed to find a link between Huawei and China’s People’s Liberation Army. NSA accessed the emails of many Huawei employees’ for this purpose. NSA stole the secret source code for certain Huawei products, and obtained the information on how to exploit Huawei’s products in order to spy on foreign customers such as Iran, Afghanistan, Pakistan, Kenya, and Cuba.
Source: https://thehackernews.com/2014/03/nsa-hacked-servers-of-chinese-telecom.html