Chinese Hackers Sat Undetected in Small Massachusetts Power Utility for Months State-sponsored Volt Typhoon hackers were poking around the Littleton Electric Light and Water Departments for at least 300 days before the FBI gave the utility a heads up.

At the time, #LELWD had been installing sensors from cybersecurity firm #Dragos with the help of Department of Energy grants awarded by the #AmericanPublicPower Association (APPA). "The sensors helped LELWD confirm the extent of the malicious activity on the system
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