KEY STAGES OF RECOVERY OF VISUAL INFORMATION FROM SIDE ELECTROMAGNETIC RADIATION VIDEO PATHS OF COMPUTING SYSTEMS

In the article examines the problem of visual information leakage through channels of side electromagnetic radiation of video paths of computing systems. It is shown that the effectiveness of developing information security methods is directly related to an understanding of the mechanisms for intercepting and recovering visual data from SER. It is noted that the information recovery procedure is a multi-stage process, including SER reception, clock and synchronization signal recovery, signal filtering and threshold processing, data bit recovery, and image reconstruction with an increased signal-to-noise ratio. Based on an analysis of the recovery sequence, it is established that the key stage of the process is the recovery of the video path clock signal, since other synchronization signals are formed on its basis. It is concluded that this stage must be taken into account when developing new methods and tools for protecting information from leakage through SER channels.