China-backed hackers spying on US critical infrastructure, says Five Eyes

Targets include US military facilities on Guam that would be key in an Asia-Pacific conflict, say Microsoft and western spy agencies

A state-sponsored Chinese hacking group has been spying on a wide range of US critical infrastructure organisations and similar activities could be occurring globally, western intelligence agencies and Microsoft have warned.

The United States and international cybersecurity authorities are issuing this joint Cybersecurity Advisory (CSA) to highlight a recently discovered cluster of activity of interest associated with a People's Republic of China (PRC) state-sponsored cyber actor, also known as Volt Typhoon," said a statement released by authorities in the US, Australia, Canada, New Zealand and the UK - countries that make up the Five Eyes intelligence network.