"China's State Security Ministry accused U.S. intelligence of prolonged attacks on the National Time Service Center. It found evidence of stolen data and credentials tracing back to 2022, used to spy on staff devices."

NSA Accused of Stealing Secrets from China's National Time Centre
China's State Security Ministry accused U.S. intelligence of prolonged attacks on the National Time Service Center.

Modern Diplomacy (moderndiplomacy.eu)