Russian Hackers Had Covert Access to Ukraine's Telecom Giant for Months

Ukrainian cybersecurity authorities have disclosed that the Russian state-sponsored threat actor known as Sandworm was inside telecom operator Kyivstar's systems at least since May 2023.
The development was first reported by Reuters.
The incident, described as a "powerful hacker attack," first came to light last month, knocking out access to mobile and internet services

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