Russian Sandworm Group Spied on Kyivstar Networks for Months

Nation-State Hackers Blamed for Severing Communications to 24 Million Citizens
Ukraine's security intelligence chief said Russian hackers had been responsible for severing internet access and mobile communications from telecom operator Kyivstar in December, after compromising the firm's network months ago. He said the "disastrous" cyberattack had wiped "almost everything."

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