Van Eck emissions from flat panels

[Kevin P. Inscoe]

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Andre Kesteloot wrote:
> THREAT FROM VAN ECK EMISSIONS NOW EXTENDED TO FLAT SCREEN MONITORS
> <mailbox:///C%7C/Documents%20and%20Settings/HP_Owner/Application%20Data/Thunderbird/Profiles/Mail/Local%20Folders/Inbox?number=-1567793659#TOC_VanEck>
> Markus Kuhn, a computer security researcher at Cambridge University, has
> shown that images from a flat screen monitor can be captured from
> several rooms away by monitoring the unique frequencies emanating from
> the cable between a computer and a monitor. This type of radiation was
> first discovered by Wim Van Eck in 1985 when he showed that computer
> images could be reproduced by tuning into the radio frequencies produced
> in the coils of a CRT monitor. Kuhn's set up consists of a radio
> receiver and antenna which can be purchased for less than £1,000. Kuhn
> says his technology works slightly differently than Van Eck's. Kuhn
> picks up each pixel as it is transmitted through the monitor cable
> towards the monitor screen. The color of the pixel can be discerned from
> the frequency it emits and then recreated on a local monitor. The
> distance at which the technique is successful can be significant. "I was
> able to eavesdrop certain laptops through three walls," says Kuhn. "At
> the CEBIT conference, in 2006, I was able to see [a] PowerPoint
> presentation from a stand 25 meters away." Khun said that shielded
> cables can help defend against this type of spying, and also certain
> color combinations are harder to detect than others. [NewScientistTech
> <http://www.newscientist.com/blog/technology/> 20Apr07]

When I had my clearance I had to take the NISPOM course by the DoD. They
call it something else now I believe. Anyway I didn't believe the Van
Eck till they took me out one day to a van in the parking lot. I became
a believer that day. :-)

- --
Kevin P. Inscoe                       Amateur Radio Call Sign: KE3VIN
Deltona, FL 32738                                28.9497N by 81.1952W
kevin [at] inscoe [dot] org                    http://kevininscoe.com
GPG 0x61288D53













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