 In 1942, Swedish SIGINT successes were such that it was split out from the General Staff's intelligence branch and made autonomous.At the end of WWII, it was suggested that of European nations, Sweden's SIGINT was second only to Great Britain's.Sweden's Defence Radio Institute, while neutral, was reported to be cooperating with the other Scandinavian countries in obtaining SIGINT on the Soviet Union and Eastern Europe

A number of reports suggest Switzerland both has its own SIGINT but may cooperate with ECHELON.