Visible to the public Air-Gap Data Transmission Using Screen Brightness Modulation

TitleAir-Gap Data Transmission Using Screen Brightness Modulation
Publication TypeConference Paper
Year of Publication2018
AuthorsBak, D., Mazurek, P.
Conference Name2018 International Interdisciplinary PhD Workshop (IIPhDW)
ISBN Number978-1-5386-6143-7
KeywordsAir gaps, air-gap data transmission, Air-gap transmission, Band-pass filters, BFSK, BFSK digital modulation, Brightness, Cameras, composability, computer virus, computer viruses, data communication, data communication channel, Demodulation, Digital demodulation, error statistics, frequency shift keying, Human Behavior, image processing, Metrics, modulation, Monitoring, pubcrawl, resilience, Resiliency, screen brightness modulation, unidirectional transmission

Air-gap data is important for the security of computer systems. The injection of the computer virus is limited but possible, however data communication channel is necessary for the transmission of stolen data. This paper considers BFSK digital modulation applied to brightness changes of screen for unidirectional transmission of valuable data. Experimental validation and limitations of the proposed technique are provided.

Citation KeybakAirgapDataTransmission2018