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Chinese Hackers Operate Undetected in U.S. Critical Infrastructure for Half a Decade
(thehackernews.com)
Confidentiality Integrity Availability
Only half a decade? I expect every first order global power to be furiously trying to get leverage in every global critical system, friend or foe. Now and forever.
Capabilities win wars.
If you can't do it with hackers, you literally get a human agent to work in the target organization. Or you find a asset and "apply leverage" to recruit them.