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Increasing speed of digital equipment moves the electromagnetic compatibility (EMC) studies into a new point due to their broadband radiated emission characteristics. Beside preventing interception from electromagnetic radiation, it is desirable to identify the information source from the radiated emissions. In this paper, we analyzed the sources of the differences among LCD emanations by checking...
Electromagnetic radiation signals from computer displays can be a computer security risk if the radiation signal is intercepted and reconstructed. In addition to the information displayed by the computer, electromagnetic radiation leaks the information of the computer itself which is more important for some attackers, protectors and security inspection workers. In this paper, we demonstrate that electromagnetic...
The electromagnetic waves emitted from devices can be a source of information leakage and can cause electromagnetic compatibility (EMC) problems. Electromagnetic radiation signal from computer display can be seen as a computer security risk if the radiation signal is intercepted and reconstructed. In addition to the image information displayed by the computer, electromagnetic radiation leaks the hardware...
Determining the best frequency band for reconstructing display video leaking signal is the key problem in TEMPEST, which is the technology of electromagnetic leaking research. To solve such problem, a novel algorithm based on spectral centroid has been developed. Using the property that spectral centroid can accurately identify the signal energy center in frequency domain, the proposed algorithm can...
Video leaking signal detection is an important part of TEMPEST, which is the technologies research focus on the investigations and studies of compromising emanations. A novel video leaking signal detection algorithm based on spectral centroid has been developed. Using the property that spectral centroid can accurately identify the signal energy center in frequency domain, the proposed algorithm can...
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