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This document analyzes compromising emanations from LCD TVs that could enable eavesdropping. It finds that 3 of 4 TVs studied emitted clear radio signals related to the displayed image, emanating from the display controller or its LVDS link. While all TVs followed the same TV standard, their timing parameters differed. Some frequency-modulated the pixel clock. Eavesdroppers could reconstruct images by averaging voltage samples at pixel refresh times, with resolution matching the pixel rate. Implications inc

Author

alex log

Language

EN