About the book: 2018 / The book tells about the Ukrainian history of the creation and development of organs and systems of special types (encrypted documentary, government and confidential) communications in the KGB structure Ukrainian SSR, the Security Service of Ukraine (SBU), the State Service for Special Communications and Information Protection of Ukraine and in the Transcarpathian region in particular, as well as the facts of SBU eavesdropping on telephone conversations and methods of monitoring communications.