The interception of information that is discussed at the objects of information activity or processed by technical means can be carried out by means of special effects on the elements of technical means. One of the effective methods of such influence is high-frequency imposition, in which channels of information leakage are formed due to acoustoelectric transformations, which are formed during the simultaneous impact on the elements of technical means of confidential signals and a probing high-frequency signal, if radical measures were not taken to prevent the penetration of currents of high frequency into technical means. Processes of formation of technical channels of information leakage by methods of high-frequency imposition, method of technical protection of information from interception by these methods, the essence of which consists in the application of combined active interference, which changes the properties of dangerous signals of high-frequency imposition, are considered. The purpose of the work is to improve the protective effects on dangerous signals formed by high-frequency imposition to ensure the maximum possible destruction of their informative parameters and, as
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