Pro-Russian Server Killers claim largest cyberattack on Norway government services
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Pro-Russian hacker group Server Killers claimed responsibility on Wednesday for a cyberattack that has disrupted multiple Norwegian government digital services since Monday. The Norwegian Digitalization Agency called it the biggest attack against its systems ever experienced. The group said it declared cyber war on Norway after the country renewed security cooperation with Ukraine on Aug. 23.
Key Facts
- The cyberattack has been ongoing since Monday, according to Are Kvistad, spokesperson for the Norwegian Digitalization Agency.
- The agency managed to keep services running 'practically all the time' despite the denial-of-service attacks.
- Norway announced on Sunday an 85 billion Norwegian crown ($9.2 billion) aid package to Ukraine for the third consecutive year.
- Server Killers claimed responsibility in a Telegram post and said it declared cyber war on Norway after the Aug. 23 security cooperation renewal.
- Norwegian officials did not comment on the hackers' claim by publication time.
Attack Details
The denial-of-service attacks pushed massive traffic toward the Norwegian Digitalization Agency to block services, including a single login used across multiple public services. Agency spokesperson Are Kvistad said the attack is the biggest against Digdir solutions ever experienced. Despite the attack, the agency kept services running 'practically all the time,' Kvistad said.
Motivation and Context
Server Killers said in a Telegram post that it declared cyber war on Norway after the country renewed security cooperation with Ukraine on Aug. 23. Norwegian Prime Minister Jonas Gahr Støre announced on Sunday during a visit to Kyiv that Norway would provide 85 billion Norwegian crowns ($9.2 billion) to Ukraine from next year's state budget. The two countries also committed to further cooperation on drone technology and other forms of modern warfare. Norwegian officials did not comment on the hackers' claim by publication time.
Regional Cyber Threat
All countries in Europe are on high alert as Russia steps up sabotage and malign activity across the continent since the full-scale invasion of Ukraine in February 2022. In 2025, Norwegian authorities said Russian hackers were likely behind suspected sabotage at a dam, where hackers opened a valve to increase water flow. Last year, Danish authorities blamed Russia for cyberattacks against infrastructure and websites in Denmark in 2024 and 2025, including a destructive attack on a water utility by pro-Russian group Z-Pentest. According to Norwegian media, Server Killers were linked directly or indirectly to previous cyberattacks in Norway and other European countries.
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Pro-Russian Server Killers claim largest cyberattack on Norway government services
