https://www.nytimes.com/2018/10/24/us/politics/trump-phone-security.html
American spy agencies, the officials said, had learned that China and Russia were eavesdropping on the president’s cellphone calls from human sources inside foreign governments and intercepting communications between foreign officials.
In what amounts to a marriage of lobbying and espionage, the Chinese have pieced together a list of the people with whom Mr. Trump regularly speaks in hopes of using them to influence the president, the officials said.