Active reserve (KGB) officers with a military rank who worked undercover in the Soviet Union. "Trusted contacts" were high placed civilians who collaborated with the KGB without signing any official working agreements, such as directors of personnel departments at various institutions, academics, deans, or writers and actors. Informers were citizens secretly recruited by the KGB, sometimes using forceful recruitment methods, such as blackmail. The precise number of people from various categories remains unknown, but one of the estimates was 11 million "informers" in the Soviet Union, or one out of every eighteen adult citizens The active reserve was established by Yuri Andropov in
KGB prison cells History confirms that it was a failed attempt. Now, the building is once again used for its original intended purpose – as a residential building. The KGB Prison Cell exhibition ‘History of the KGB House’ speaks primarily of the crimes committed there. But just before entering the building, it is well worth taking a glance at the beautiful facade of one of the most elaborate Art Nouveau buildings in Tallinn and pondering the strangeness of history. KGB prison cells The former KGB prison cells at Pagari 1, Tallinn were opened for visitors in 2017 July. The cells are administrated by