1.5 Technical Channels of Information Leakage
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Fig. 1.9 Structure of the technical channel of information leakage processed by computer
equipment
Intelligence agencies use technical intelligence equipment (TIE) to intercept
information. To intercept information for CE processing, the technical intelligence
equipment of stray electromagnetic radiation and pickup (TIE SERP) is used.
Other interested parties (intruders, competitors) use special technical devices
(STD) adapted or modified for unauthorized reception of information.
Depending on the physical nature of the formation of an informative signal,
technical channels of information leakage can be divided into natural and artificial
(Fig. 1.10).
Natural channels of information leakage are formed due to the so-called stray
electromagnetic radiation arising when processing CE information (electromagnetic
channels of information leakage), as well as due to pickup of informative signals in
CE electrical power lines, AES connecting lines and external conductors (electric
channels of information leakage) [22].
Artificial channels of information leakage include channels created by introducing
special electronic interception devices (embedded devices) into the CE and by “highfrequency irradiation” of CE [22].
1.5.2 Electromagnetic Channels of Computer-Processed
Information Leakage
In the electromagnetic channels of information leakage, information medium is electromagnetic radiation (EMR) resulting from information processing by technical
means. Electromagnetic channels of information leakage appear in the IPE due to
[20, 22, 23]:
• Stray electromagnetic radiation resulting from the flow of informative signals in
the IPE components;