Archiv: displays

13.02.2019 - 12:44 [ Wim van Eck / ]

Electromagnetic Radiation from Video Display Units: An Eavesdropping Risk?

(1985) In February, 1985, we carried out an eavesdropping experiment in London, in cooperation with the British Broadcasting Corporation. Part of the results were shown in the programme „Tomorrow’s World.“ A small van was equipped with a 10 metre high pump mast to which a VHF band III antenna was clamped (10 dB gain). The received signal was fed through an antenna, amplified (18 dB) and displayed on a television screen inside the van.

For obvious reasons we cannot give information on the data picked up during the experiment. The results can be
summarized as follows:

• It is possible to eavesdrop on the video display units or terminals in buildings from a large distance, using a car fitted up for the purpose.

• Although the experiment was carried out in broad daylight and many people watched us, nobody asked what we were doing.