Nordic Authorities Heighten Security Over Credible Cyber Threat to Energy Infrastructure

Authorities across the Nordic countries, including Sweden, have raised their alert levels due to a credible cyber threat targeting the region's energy infrastructure. This heightened vigilance follows a significant cyberattack on Poland's energy sector in December 2025, which notably affected multiple wind and solar parks, a private manufacturing company, and a district heating plant servicing nearly half a million customers.

The Swedish National Defence Radio Establishment (FRA) and other agencies have coordinated efforts to monitor and protect critical energy facilities. Police forces have received explicit orders to remain vigilant and report any anomalies, although no imminent or specific threats against Sweden have been identified.

FRA's communications chief, Ola Billger, explained that while the agency has increased security measures, the current situation reflects a general elevation in threat levels rather than a direct attack. The Polish government has attributed the December attack to foreign actors, with Russian-linked groups suspected.

Sweden's Energy and Business Minister, Ebba Busch, acknowledged the long-standing elevated threat against the energy sector and praised proactive measures enhancing the nation’s energy preparedness and security. Meanwhile, the Swedish Security Service (Säpo) continues to work on identifying any potential threats amid this high general cyber threat environment.

Other regional authorities like the County Administrative Board of Västra Götaland reported no new directives relating to the threat, underscoring that the increased alert is precautionary. The Swedish Energy Agency has deferred detailed commentary to FRA, which leads the response and advises continued vigilance across the Nordic energy sector.

This coordinated response underscores the growing concerns over cyber threats in vital infrastructure, especially following the destabilizing December attack in Poland, prompting Nordic countries to adopt proactive cybersecurity measures to safeguard their energy systems.