Researchers say Russian government hackers were behind attempted Poland power outage

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Russian Hackers Target Poland's Energy Sector in Cyberattack In late December 2025, Russian government hackers attempted a cyberattack on Poland's energy infrastructure, specifically targeting two heat and power plants. The attack, linked to the Sandworm group by ESET, occurred on December 29 and 30, raising alarms about the security of critical energy systems in Poland. 2 sources 41