Norway ’s Digital Government Infrastructure Hit by a new DDoS Attack

Norway ‘s shared digital government infrastructure has been hit by another distributed denial-of-service (DDoS) attack that disrupted services used by citizens, businesses and public agencies. The incident began at 03:38 CEST on Monday, August 24, and targeted infrastructure operated by the Norwegian Digitalisation Agency, Digdir, together with its service provider Vivicta. The timing matters because this isn’t an isolated event. Digdir says it’s the third DDoS attack against its services in a short period, following incidents in June and on August 3. “The Norwegian Directorate for Digitalisation (Digdir) has been subjected to a denial of service attack (DDoS attack) that has been ongoing since 03:38 on the night of Monday, August 24.” reads the statement published by Digdir Agency. “This is the third time in a short time that this type of attack has been directed at Digdir’s solutions. Digdir is working closely with our subcontractor Vivicta. NSM and the Norwegian Data Protection Authority have also been notified of the case.” That status update refers to the test environment, but the underlying attack also affected production services. Digdir reported that several shared services became completely unavailable for short periods, while others remained accessible but suffered connection failures, slow responses and longer-than-usual login times. Digdir operates several pieces of Norway’s shared public-sector infrastructure. Among them are ID-porten, MinID, Maskinporten, eFormidling, eInnsyn, the Contact and Reservation Register, Ansattporten and other services used by government agencies and external applications. That makes an attack on Digdir more significant than an ordinary website outage. When a shared authentication service goes down, the disruption can propagate to services that aren’t themselves under attack. That’s exactly what happened. Altinn, Norway’s central platform for communication between citizens, businesses and government, was also affected, while other public services relying on ID-porten experienced login problems. Earlier attacks this summer produced similar effects, including disruption to access to Helsenorge, NAV and Skatteetaten. The technical distinction is important: the attackers didn’t need to break into every downstream service. They could create disruption simply by overwhelming a shared dependency. And that’s often the uncomfortable reality of modern public infrastructure. The weakest point isn’t necessarily the service citizens see on their screens. It can be the common authentication, messaging or data-exchange layer underneath it. Digdir has stressed that the incident is about availability, not evidence of a successful intrusion. The agency also says it has found no indication that personal data was exposed. Digdir has notified Norway’s National Security Authority, NSM, and the Data Protection Authority, Datatilsynet, as part of its response. “There are no indications that the attack has led to a security breach or that personal data has been compromised, says Director Frode Danielsen at Digdir.” continues the statement. That distinction deserves attention because cyberattack doesn’t automatically mean “data theft”. In this case, the confirmed impact is service disruption, while there is currently no evidence that attackers compromised Digdir’s systems or accessed personal information. The operational consequences are still serious. Public-sector users may see failed connections, slow responses or authentication problems even though the underlying applications themselves haven’t been compromised. The June incident already demonstrated how much disruption a DDoS attack against Digdir’s infrastructure can cause. That attack targeted ID-porten through Vivicta’s network infrastructure and temporarily affected services including ID-porten, MinID, Maskinporten, eInnsyn and eFormidling. Another attack followed on August 3. Digdir restored normal operations the following day, but the agency said the incident had again affected several shared services and that it would review the event together with Vivicta and other partners. Now there’s a third incident. That repetition is more interesting from a defensive perspective than the raw duration of any single outage. Digdir and Vivicta are clearly able to mitigate the attacks and restore services. The harder question is whether repeated attacks against the same shared infrastructure can keep generating enough operational friction to become a recurring problem for the wider public sector. This is where DDoS stops being just a bandwidth problem. A sufficiently persistent campaign can force defenders to keep changing traffic controls, filtering rules and protection measures, while legitimate users continue to depend on the same infrastructure. Digdir’s own status updates show that dynamic clearly. On August 24, the agency first reported improvement, then said several solutions were completely down, followed by further stabilization efforts. There is currently no official attribution for the attacks. Norwegian media have raised the possibility of Russian involvement, but that remains speculation rather than an established finding. That distinction matters. A DDoS campaign can be politically motivated, financially motivated, conducted for disruption or simply intended to demonstrate capability. Without technical evidence and an official attribution process, assigning responsibility to a particular state or group would be premature. What is established is the target and the effect. The attacks repeatedly hit infrastructure that sits underneath a large number of Norwegian digital public services. That’s enough to make the incidents strategically relevant without adding an attribution story that the evidence doesn’t yet support. The Norwegian case is also a useful reminder that cybersecurity isn’t limited to confidentiality and integrity. Availability is a security property too, particularly when the affected systems provide national digital services. A compromised database is an obvious security incident. An authentication service that repeatedly becomes unavailable can create a different kind of problem: citizens can’t access services, businesses can’t complete procedures and government agencies may struggle to perform routine operations. Digdir says its services have largely stabilized, although some disruptions remain. As of the latest incident updates, ID-porten still had limitations, eSignering remained unavailable because of those ID-porten restrictions, and some users were still reporting connection problems or increased response times with Maskinporten. Follow me on Twitter: @securityaffairs and Facebook and Mastodon (SecurityAffairs – hacking, newsletter)