Acoustic threat of information leakage by means of modulation of visible light

Shvyrev Boris Anatolievich, Timonov Dmitry Aleksandrovich

The article discusses a new type of leakage of acoustic information by means of modulating the visible light generated by the LEDs of lighting devices due to the microphone effect or deliberately inserted bookmarks. The sound of human speech is distributed in the room with the absorbing coating without taking into account the reflections. The main method of hiding information processed in the meeting room in accordance with the current regulations is to install vibration-acoustic generators in potentially vulnerable areas. The tactics of their location is based on the model of the threat of information leakage on the means of using radio waves. In the work, the calculation of the signal-to-noise ratio for different heights of the room. The existence of information security vulnerabilities due to the transmission of voice information available without interference at the ceiling level with lighting LEDs is shown. The choice of information security tools does not take into account the threat of information leakage by means of modulation of visible light.

Keywords:leakage channel of acoustic information, modulation of visible light, signal-to-noise ratio, information leakage threat