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by ardy42
2235 days ago
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>> TEMPEST [1] (or Van Eck Phreaking) is a technique to eavesdrop video monitors by receiving the electromagnetic signal emitted by the VGA/HDMI cable and connectors IIRC, I think it originally used the analog signals generated by controlling the electron gun in a CRT. |
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https://www.cl.cam.ac.uk/~mgk25/pet2004-fpd.pdf
tl;dr The signal from a DVI cable can be detected but at much more reduced ranges. See also; RAGEMASTER (Snowden leak) a range extending implant for video cables.