China Unicom has become the latest Chinese telecoms giant to be banned from the US over “significant” national security and espionage concerns. Chinese technology and telecoms firms have been targeted in recent years by US authorities over national security concerns. In November, President Joe Biden signed legislation that stops companies judged to be a security threat from receiving new telecoms equipment licences. Washington said that some of the firms are helping develop the Chinese military’s quantum computing programme. Is China really spying on US?