Chinese state-linked hackers breached mobile phones at "the heart of Downing Street" amid a global cyber-espionage campaign over several years targeting telecommunication networks, according to reports.
U.S. officials first alerted its allies in 2024 after finding out that hacking groups had gained access to telecom companies around the world, according to The the FBI and the Cybersecurity and Infrastructure Security Agency, was to help root out the hackers and prevent similar attacks in the future.
A joint cybersecurity advisory was issued in August 2025, with the U.S. National Security Agency (NSA) and allied partners warning that Chinese state-sponsored actors were targeting networks globally.
"The malicious activity outlined in the advisory partially overlaps with cybersecurity industry reporting on Chinese state-sponsored threat actors referred to by names such as Salt Typhoon," an Salt Typhoon was "one of the most prominent names" in the cyber-espionage world.
"While much of the public reporting has focused on U.S. targets, Salt Typhoon’s operations have extended into Europe, the Middle East and Africa, where it has targeted telecoms firms, government entities and technology companies," Wollman of cybersecurity platform CyberProof added.
In the past, China’s foreign ministry dismissed the claims as "baseless" and "lacking evidence," according to The Telegraph.
Fox News Digital has reached out to Downing Street for comment.