Microsoft links attacks on American critical infrastructure systems to China

Microsoft and a few American intelligence agencies have detected malware of Chinese origin deployed in critical infrastructure systems in Guam and elsewhere in the United States.

The malicious activity, focused on post-compromise credential access and network security discovery, has been linked to Volt Typhoon, a state-sponsored threat actor in China.

“Volt Typhoon has been active since mid-2021 and has targeted critical infrastructure organizations in Guam and elsewhere in the United States,” Microsoft said in a blog post. “In this campaign, the affected organizations span the communications, manufacturing, utility, transportation, construction, maritime, government, information technology, and education sectors.”

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