…this?
"https:// www.nytimes.com/2017/05/20/world/asia/china-cia-spies-espionage.html
May 20, 2017 - WASHINGTON — The Chinese government systematically dismantled C.I.A. spying operations in the country starting in 2010, killing or imprisoning more …. Chinese had hacked the covert communications channel, would explain many, if not all, of the disappearances and deaths, some former officials said."
–Google