Some of the details of the alleged China snooping are as follows:
"At the heart of the allegations are claims that China, using a state-controlled mobile phone operator, is directing signaling messages to US subscribers, usually while they are travelling abroad.
Signaling messages are commands that are sent by a telecoms operators across the global network, unbeknownst to a mobile phone user. They allow operators to locate mobile phones, connect mobile phone users to one another, and assess roaming charges. But some signaling messages can be used for illegitimate purposes, such as tracking, monitoring, or intercepting communications."
Miller claims that among US telecoms providers it's a bit of an "open secret" but that "No one in the industry wants the public to know the severity of ongoing surveillance attacks."
The findings appear to center on Signaling System 7 (SS7), a communications protocol which routes calls and data around the world. Analysts have long decried its inherent weaknesses and security vulnerabilities.
China's Communist Party (CCP) seems to be implementing a multidimensional strategy in the Caribbean, reaping economic, political and potentially military gains a few miles offshore the United States. https://t.co/cb692ZoyGl — Joaquín Ortega (@ortegabrothers) December 10, 2020