Ways and means of information protection from leaks through technical channels

The article deals with the methods and ways of information protection from leaking through technical channels because of side electromagnetic radiation and aiming when it is processed with use of technical means, transmission by radio and optical communication channels, leak channels of the acoustic (speech) and specific information. Presented the conceptual basics of engineering and technical protection of information, its basic principles, classified and defined the basic methods and means of ensuring information security for each of the possible leak channels.