(Bloomberg) -- Russian hacker group Killnet targeted a string of Norwegian public service websites in the latest digital salvo against NATO member countries.

Norway’s National Security Authority has been assisting a series of organizations in dealing with targeted cyber attacks from an alleged pro-Russian group, Director General Sofie Nystrom told reporters on Wednesday. Some websites experienced instability or disruption, but there are currently no indications that any sensitive or personal information has been compromised. 

The public administration portal, the corporate page of an online banking identification service and the Norwegian Labor Inspection Authority were among those affected by so-called distributed denial-of-service attacks. The website of Norway’s largest newspaper was also down for 25 minutes, it reported on Wednesday.

Other NATO members have faced similar attacks, with Lithuania’s defense chief saying on Wednesday that the Baltic nation has come under an unprecedented cyber attack this week after the government announced it would start blocking the transit of sanctioned goods to the Russian exclave of Kaliningrad.

Norway has itself also refused the transit of sanctioned Russian goods bound for the archipelago of Svalbard via its mainland ports as part of the measures implemented after the invasion of Ukraine. A shipment of two containers that was blocked last week included spare parts for ships and vehicles, TV2 reported. 

Norway has sovereignty over Svalbard, according to a 1920 treaty, but signatories have equal rights to carry out commercial activities there.

©2022 Bloomberg L.P.