In this study, former Soviet Union’s secret service, Komitet Gosudarstvennoi Bezopasnosti (KGB) has been investigated by limited aspects. As the Union of Soviet Socialist Republics (USSR)’s intelligence agency, KGB was the ordinary primary secret service in the world. This paper has been investigated USSR’s secret service, KGB’s secret activities in all over the world. It is popularity was extra ordinary before the Cold War 1990.