US, Microsoft warn Chinese hackers attacking 'critical' infrastructure

A security surveillance camera is seen near the Microsoft office building in Beijing, July 20, 2021. [AP Photo]

State-sponsored Chinese hackers have infiltrated critical U.S. infrastructure networks, the United States, its Western allies and Microsoft said Wednesday while warning that similar espionage attacks could be occurring globally.

Microsoft highlighted Guam, a U.S. territory in the Pacific Ocean with a vital military outpost, as one of the targets, but said "malicious" activity had also been detected elsewhere in the United States.