ELECTROMAGNETIC SHIELDING AS A WAY OF PROTECTING INFORMATION FROM ITS LEAKAGE BY TECHNICAL CHANNELS

In this paper, investigated one of the way protecting information from its leakages through technical channels, such as shielding. The first part work mainly consider theoretical principles shielding, definition and process types, main task shield, highlighted concept shielding efficiency, presented dependence for calculating efficiency electromagnetic provided shields classification according to three characteristics: type field interference, design material, shield forms, each them magnetic field, depth penetration, a value that characterizes effect material. second separate types electric effectiveness, requirements shields, considered low-frequency high-frequency fields, dependences magnetostatic mechanisms protection against field. third calculated penetration non-magnetic materials at given frequencies with different conductivity thickness walls, graphs frequency shown graph materials, made conclusions recommendations regarding selection high low frequencies, permanent