Researchers say Russian government hackers were behind attempted Poland power outage | TechCrunch
Topics
Latest
AI
Amazon
Apps
Biotech & Health
Climate
Cloud Computing
Commerce
Crypto
Enterprise
EVs
Fintech
Fundraising
Gadgets
Gaming
Google
Government & Policy
Hardware
Instagram
Layoffs
Media & Entertainment
Meta
Microsoft
Privacy
Robotics
Security
Social
Space
Startups
TikTok
Transportation
Venture
More from TechCrunch
Staff
Events
Startup Battlefield
StrictlyVC
Newsletters
Podcasts
Videos
Partner Content
TechCrunch Brand Studio
Crunchboard
Contact Us
Researchers say Russian government hackers were behind attempted Poland power outage
A failed December effort to bring down parts of Poland’s energy grid was the work of Russian government hackers known for causing past energy disruptions, according to a security research firm that investigated the incident.
Last week, Polish Energy Minister Milosz Motyka told reporters that the attempted cyberattack on December 29 and 30 saw hackers targeting two heat and power plants, as well as trying to disrupt the communication links between renewable installations, such as wind turbines and power distribution operators.
Motyka called the incident the “strongest attack” on Poland’s energy infrastructure in years, with the Polish government blaming Moscow for the attempt. Local media reported that the attacks could have knocked out heat and power for at least half a million homes across the country.
On Friday, cybersecurity firm ESET said it obtained a copy of the destructive malware, which it calls DynoWiper. This type of malware, known as “wiper” malware, is designed to irreversibly destroy data on computers to prevent them from working.
ESET attributed the malware with “medium confidence” to the hacking group known as Sandworm, a unit within Russia’s military intelligence agency GRU, based on a “strong overlap” with its previous research into Sandworm’s past malware, including the group’s use of destructive malware to target Ukraine’s energy sector.
Independent journalist Kim Zetter first reported the news.
As noted by Zetter, the cyberattacks targeting Poland come almost exactly a decade after Sandworm’s first-known cyberattack on Ukraine’s energy infrastructure in 2015, which caused power outages for more than 230,000 homes around the country’s capital, Kyiv. A similar cyberattack hit Ukraine’s energy systems a year later.
Following the attempted hack, Poland’s prime minister, Donald Tusk, said that the country’s cybersecurity defenses worked, and “at no point was critical infrastructure threatened.”
Topics
Security Editor
Zack Whittaker is the security editor at TechCrunch. He also authors the weekly cybersecurity newsletter, this week in security.
He can be reached via encrypted message at zackwhittaker.1337 on Signal. You can also contact him by email, or to verify outreach, at [email protected].
Tickets are live at the lowest rates of the year. Save up to $680 on your pass — and if you’re among the first 500 registrants, score a +1 pass at 50% off.Meet investors. Discover your next portfolio company. Hear from 250+ tech leaders, dive into 200+ sessions, and explore 300+ startups building what’s next. Don’t miss these one-time savings.
Most Popular
Capital One acquires Brex for a steep discount to its peak valuation, but early believers are laughing all the way to the bank
Capital One acquires Brex for a steep discount to its peak valuation, but early believers are laughing all the way to the bank
Anthropic’s CEO stuns Davos with Nvidia criticism
Anthropic’s CEO stuns Davos with Nvidia criticism
Humans&, a ‘human-centric’ AI startup founded by Anthropic, xAI, Google alums, raised $480M seed round
Humans&, a ‘human-centric’ AI startup founded by Anthropic, xAI, Google alums, raised $480M seed round
SpaceX didn’t properly inspect crane before collapse at Starbase, OSHA says
SpaceX didn’t properly inspect crane before collapse at Starbase, OSHA says
Well, there goes the metaverse!
Well, there goes the metaverse!
Sequoia to invest in Anthropic, breaking VC taboo on backing rivals: FT
Sequoia to invest in Anthropic, breaking VC taboo on backing rivals: FT
Why Silicon Valley is really talking about fleeing California (it’s not the 5%)
Why Silicon Valley is really talking about fleeing California (it’s not the 5%)
© 2025 TechCrunch Media LLC.