--- title: ESET: Russia likely behind Poland power grid attack description: Cybersecurity researchers at ESET attribute a failed December cyberattack on Poland's power grid to Russia's GRU-run Sandworm unit with medium confidence. The... canonical: https://daily.dev/posts/eset-russia-likely-behind-poland-power-grid-attack-gsykf51zg twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: ESET: Russia likely behind Poland power grid attack | daily.dev og:description: Cybersecurity researchers at ESET attribute a failed December cyberattack on Poland's power grid to Russia's GRU-run Sandworm unit with medium confidence. The... og:url: https://daily.dev/posts/eset-russia-likely-behind-poland-power-grid-attack-gsykf51zg og:image: https://api.daily.dev/og/posts/gSYkf51Zg.png og:image:alt: ESET: Russia likely behind Poland power grid attack og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # ESET: Russia likely behind Poland power grid attack **[The Register](https://daily.dev/sources/theregister)** · 3 min read · 1 upvotes · 0 comments ## Summary Cybersecurity researchers at ESET attribute a failed December cyberattack on Poland's power grid to Russia's GRU-run Sandworm unit with medium confidence. The attackers deployed DynoWiper malware targeting communication between renewable energy hardware and distribution operators, though the attack was unsuccessful. The use of wiper malware aligns with Sandworm's history of targeting critical infrastructure in adversarial nations, including previous attacks on Ukraine's energy sector. ESET believes the timing coincided with the ten-year anniversary of Sandworm's 2015 Ukraine power grid attack, the first known malware-caused blackout. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#cyber](https://daily.dev/tags/cyber), [#malware](https://daily.dev/tags/malware) [View this post on daily.dev](https://daily.dev/posts/eset-russia-likely-behind-poland-power-grid-attack-gsykf51zg) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"ESET: Russia likely behind Poland power grid attack","url":"https://daily.dev/posts/eset-russia-likely-behind-poland-power-grid-attack-gsykf51zg","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/eset-russia-likely-behind-poland-power-grid-attack-gsykf51zg"},"datePublished":"2026-01-26T12:01:03.772Z","dateModified":"2026-02-27T20:58:25.218Z","description":"Cybersecurity researchers at ESET attribute a failed December cyberattack on Poland's power grid to Russia's GRU-run Sandworm unit with medium confidence. 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