Networks controlled by a pervasive Chinese hacking group dubbed "Volt Typhoon" have been disrupted by a U.S. government operation, it was reported earlier this week.
The group has alarmed intelligence officials, who say it is part of a larger effort to compromise Western critical infrastructure, including naval ports, internet service providers and utilities, raising concerns that the hackers were working to hurt U.S. readiness in case of a Chinese invasion of Taiwan.
Here is what is known about Volt Typhoon and its potential threat:
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