Geir Eriksen (born 15 May 1965), former names Geir Selvik and Geir Selvik Malthe-Sørenssen, is a Norwegian con artist and convicted felon. He formerly worked as a private investigator for criminal clients, and became known for fabricating material in the Arne Treholt case; it was subsequently revealed that he had engaged in similar fraud in a large number of other cases. He was charged with aggravated fraud and forgery; his criminal trial started in Oslo District Court in 2018, and he pled guilty to all charges. On 18 June 2018 Malthe-Sørenssen was convicted of aggravated fraud and forgery of documents, and sentenced to three years in prison and to pay his victims over seven million Norwegian kroner in restitution. He has changed his names several times, but is best known under the name Ge