U.S. intelligence officials warn that Chinese state-backed hackers, identified as the 'Typhoon' groups, pose a serious threat to American critical infrastructure. These hackers have infiltrated sectors like water, energy, and transportation, preparing for potential future cyberattacks amid rising tensions. Groups like Volt Typhoon and Flax Typhoon have been actively targeting sensitive networks, while the newly discovered Salt Typhoon may have compromised U.S. telecom wiretap systems. The FBI emphasizes the urgency of countering these threats to protect national security and civilian safety.