CERT Polska Details Coordinated Cyber Attacks on 30+ Wind and Solar Farms
Jan 31, 2026
Network Security / SCADA
CERT Polska, the Polish computer emergency response team, revealed that coordinated cyber attacks targeted more than 30 wind and photovoltaic farms, a private company from the manufacturing sector, and a large combined heat and power plant (CHP) supplying heat to almost half a million customers in the country. The incident took place on December 29, 2025. The agency has attributed the attacks to a threat cluster dubbed Static Tundra , which is also tracked as Berserk Bear, Blue Kraken, Crouching Yeti, Dragonfly, Energetic Bear, Ghost Blizzard (formerly Bromine), and Havex. Static Tundra is assessed to be linked to Russia's Federal Security Service's (FSB) Center 16 unit. It's worth noting that recent reports from ESET and Dragos attributed the activity with moderate confidence to a different Russian state-sponsored hacking group known as Sandworm. "All attacks had a purely destructive objective," CERT Polska said in a report published Friday. "Althoug...