Ministry of Public Security (Poland)

The Ministry of Public Security (Polish: Ministerstwo Bezpieczeństwa Publicznego), was the secret police, intelligence and counter-espionage agency operating in the Polish People's Republic. From 1945 to 1954 it was known as the Security Office (Urząd Bezpieczeństwa, UB), and from 1956 to 1990 as the Security Service (Służba Bezpieczeństwa, SB).