Chinese security company “Equation Group” report – a hacking group widely believed to be the NSA

National Security Agency – Wikipedia

Here is a report from Pangu Lab, a Chinese cyber security company, about possible state sponsored hacking by the US, through the NSA.

Details of an NSA Hacking Operation – Schneier on Security

Chinese Cybersecurity Company Doxes Apparent NSA Hacking Operation (vice.com)