An advanced network of digital spies with a nexus to Chinese interests has successfully compromised parts of the global telecommunications network, in some cases allowing access to subscriber information, call metadata, text messages and other data, according to research released Tuesday by CrowdStrike....
https://www.cyberscoop.com/a-china-aligned-espionage-group-is-targeting-global-telecoms-sweeping-up-call-data-dating-back-years/
from CyberScoop