US EditionRussian Hackers Targeted Poland's Power Grid in December, ESET Says
The December cyberattack, linked to Russia's Sandworm unit, targeted Poland's power grid and renewables but was repelled, avoiding disruption to about 500,000 homes, officials said.
- On December 29 and 30, attackers targeted two heat and power plants and tried to sever communications between renewable installations and power distribution operators, ESET and Polish officials said.
- Built patterns of destructive operations across a decade show the December attack coincided with the tenth anniversary of a Sandworm-linked 2015 attack that caused outages for more than 230,000 homes.
- ESET's technical analysis found code overlaps with past Sandworm tools, and Kim Zetter, independent journalist, first reported the breach as linked to Russian government hackers, security researchers said Friday.
- Authorities reported defenses held and no successful disruption occurred, with Researchers and Poland's Prime Minister Donald Tusk saying cybersecurity worked despite local media estimates of impacts on half a million homes.
- Polish officials blamed Moscow for the attempt, with Milosz Motyka calling it the "strongest attack" on Poland's energy infrastructure in years, while the Russian Embassy in Washington did not immediately respond.
33 Articles
33 Articles
Sandworm hackers linked to failed wiper attack on Poland’s energy systems
A cyberattack targeting Poland's power grid in late December 2025 has been linked to the Russian state-sponsored hacking group Sandworm, which attempted to deploy a new destructive data-wiping malware dubbed DynoWiper during the attack..
Researchers say Russian government hackers were behind attempted Poland power outage
Security researchers have attributed the attempted use of destructive "wiper" malware across Poland's energy infrastructure in late December to a Russian-backed hacking group known for causing power outages in neighboring Ukraine.
Russia carried out a series of cyberattacks on Poland's energy sector in late 2025, which nearly left the country without power. Polish Deputy Prime Minister and Minister of Digitalization Krzysztof Gawkowski announced this, according to RBC-Ukraine, citing RMF24. According to Gawkowski, numerous attacks on the Polish energy sector occurred in late 2025, and the situation was difficult to control, particularly due to adverse weather conditions. …
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