لجنة أمن الدولة
The Committee for State Security (, "Komitet za darzhavna sigurnost"; abbreviated КДС, CSS, KDS), popularly known as State Security (Държавна сигурност, "Darzhhavna sigurnost"; abbrievated ДС, DS) was the name of the Bulgarian secret service under the People's Republic of Bulgaria during the Cold War, until 1989.