Two extensive espionage cases in Sweden during the Cold War involved Boden Fortress, both exposed in 1951. The Enbom case involved Fritiof Enbom, a former worker at the Swedish State Railways in Boden, and later the local editor for the communist newspaper "Norrskensflamman". He was exposed by his own careless talk—often under the influence of alcohol—to the owners of the house in Stockholm where he had lodged since he moved there from Boden. The family told the Swedish Security Service after the Christmas holidays of 1951, and Enbom was arrested on 16 February 1952. During interrogation, he confessed that he—from February 1943 to April 1951—had met with Soviet employers around 25 times. Enbom had provided a large variety of intelligence, most of it from public sources, but also secrets, of which the armament of one of the forts in the fortress was one of the pieces of information that concerned Boden Fortress and nearby fortifications. He was sentenced to lifetime hard labour, but was released after ten years. The other case involved Ernst Hilding Andersson, who was arrested on 21 September 1951. He had carried out seven missions for the Soviets and had provided them primarily with information regarding the Swedish Navy, but also information on the fortifications along the Norrland coast, and an initiated report about Boden Fortress and the airforce unit located in Boden and Luleå, Norrbotten Air Base Corps. Andersson was, like Fritjof Enbom, sentenced to hard labour for life.