U.S. government officials confirm that China-backed hacking group Salt Typhoon is still present in the networks of major American phone and internet providers.
Telecom giants such as AT&T, Verizon, and Lumen are currently working to remove the hackers, as their motivations remain unclear.
The hacks are believed to be part of China's espionage efforts, with U.S. officials and senior Americans, including presidential candidates, being targeted.
The U.S. government has issued guidance to telecom networks on securing their systems against these China-backed hackers.