Revealed: China suspected of spying on Americans via Caribbean phone networks

Security expert claims Chinese surveillance may have affected tens of thousands of Americans

China appears to have used mobile phone networks in the Caribbean to surveil US mobile phone subscribers as part of its espionage campaign against Americans, according to a mobile network security expert who has analysed sensitive signals data.

The findings paint an alarming picture of how China has allegedly exploited decades-old vulnerabilities in the global telecommunications network to route active" surveillance attacks through telecoms operators.