Kamphuis may have opted for anonymity

Friends and colleagues of Arjen Kamphuis keep in mind that the cyber expert still lives and has left in anonymity.

Kamphuis has been missing since August. He was last seen at his hotel in the Norwegian Bodø. His kayak was later found in a nearby fjord.

The Norwegian police still keep all scenarios open, but the research is on the back burner. However, the family and friends of Kamphuis do not give up. They start a sticker campaign next week at the international hackers congress in Leipzig, with the request to continue looking for Kamphuis.