(en) Tore Bergsaker, Harald S. Klungtveit, Glenn Greenwald et Gunnar Hultgreen, « NIS aquires supercomputer - It´s codenamed Steelwinter and is part of a 100 million dollar investment program. The supercomputer will crack heavy cryptology and analyze the vast amounts of data Norwegian Inteligence Service (NIS) collects. », Dagbladet, (lire en ligne)
