There are several: employing Faraday cages or direct chokes on and around RF-emitting components, use of RF-absorbent paints and materials, elimination of radiators such as exposed cabling, use of isolated mains power generation, use of non-RF-radiating display technologies... There're a lot of things you can do to cut down on a readable RF signature. Mostly, it's going to depend on the equipment in use and environment it's being used in.
www.lessemf.com has a wide assortment of cool stuff for doing just that.
My favorite product is the metalisized fabrics. I'm in possesion of a couple samples of it for my latest project and it's neat stuff. It ain't cheap, but it's effective.
This thing is impossible! i belive i am doing somethign wrong... the ADC appears to be dead...
I've built a scrapheap looking device! but apparently it does not quite work...at first i thought it was the software... but i belive my electronics suck :D
I'm giving up till i'll get a brainstorm! and then! you better watch your computerz HaHaHaaaaHahaah ;) i hope hell doesen't frezze over!
My father was very helpfull though.. i asked him if he would help me build one (he's like an electronics genious :D ), and he said:
"Stop acting childish ma' boy, why would you wanna build such a device for? (like duh!)"... i mean, i just wanted to know if it workz... the hard (and exciting) way!
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This thing is impossible! i belive i am doing somethign wrong... the ADC appears to be dead...
I've built a scrapheap looking device! but apparently it does not quite work...at first i thought it was the software... but i belive my electronics suck :D
I'm giving up till i'll get a brainstorm! and then! you better watch your computerz HaHaHaaaaHahaah ;) i hope hell doesen't frezze over!
My father was very helpfull though.. i asked him if he would help me build one (he's like an electronics genious :D ), and he said:
"Stop acting childish ma' boy, why would you wanna build such a device for? (like duh!)"... i mean, i just wanted to know if it workz... the hard (and exciting) way!
You'll need a ADC converter that does at least 50 million samples per second. Most of these are only available in surface mount packages, so you may need to purchase the pre-built evaluation board. The receiver needs to be a wideband AM receiver, TV/VCR tuners can be adapted, but the frequency range is limited. Start by tuning in the dot pixel frequency or a harmonic of that.
I looked into Van Eck Phreaking a couple years back for a paper, I agree it's some pretty interesting stuff.
For a great little fictitious example, read Cryptonomicon by Neal Stephenson. Great book to begin with, well worth the read. At one point, they Van Eck phreak their friends laptop in a hotel room.
So if you're staying in a room at the AP, and you weren't already paranoid...
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Oderint dum metuant...
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I looked into Van Eck Phreaking a couple years back for a paper, I agree it's some pretty interesting stuff.
For a great little fictitious example, read Cryptonomicon by Neal Stephenson. Great book to begin with, well worth the read. At one point, they Van Eck phreak their friends laptop in a hotel room.
So if you're staying in a room at the AP, and you weren't already paranoid...
Which, of course, brings to mind everyone at the AP having a document entitled "MY Letter to Penthouse" on an open window, and actually communicating with the computer via Morse Code on the Scroll Lock light... ;)
Thorn "If you can't be a good example, then you'll just have to be a horrible warning." - Catherine Aird
Van Eck F(ph)reaking was founded in Sweden in 1983 and proved that the monitors could be picked up as far as 100 feet. With the new technologies always upgrading, it was soon enhanced by some well known companies just to prove it still exists with monitors of all frequencies. I won't say which companies are selling products that actually will Van Eck monitors up to 1km away, but if you do find one it will always say for educational use only and will cost you a pretty penny. (Even if you can make one yourself for less than 50 bucks to do the same thing.) The Government thought it was such a threat they improvised a few laws which requires their monitors to have VDU or some sort of Radiation shielding to prevent leaking signals. However, not every State and Federal agency has taken this threat seriously enough and does use standard monitors, nor do they use Safe-n-guard to help catch leaky signals. So basically you could be WarDriving and point your silver rod at any building and pick up a monitor being used ....and yes, see everything on the monitor in exact detail in real time. Now keep in mind some Government agencies do use this method themselves to catch spies, as in how the FBI caught the Navy spy who was selling secrets to the russians. Also keep in mind, that with new technology comes new revolutions to this concept. Such as ANY monitor, be it LCD or other can now be viewed by Van Eck applications up and over 1km.
By the way, some places will sell a video showing you the Van Eck device working with two computers and will also sell the plans (schematics) on how to build your own device. Don't buy the video, it is not worth the money, but the plans are worth getting.
Remember, even getting screen shots of someone elses computer screen is considered illegal, even if it is with a Van Eck Device.
This was for educational use only. As always.
I won't say which companies are selling products that actually will Van Eck monitors up to 1km away, but if you do find one it will always say for educational use only and will cost you a pretty penny.
Someone has been watching a bit too many conspiracy videos... Also, don't give the usual bullshit about "I know it all, but I can't tell you. They're listening, you know!".
Someone has been watching a bit too many conspiracy videos... Also, don't give the usual bullshit about "I know it all, but I can't tell you. They're listening, you know!".
Let's see... You dug up a thread that had been dead for seven months to jump on someone making a valid point, and all in your first post. I'd suggest you go back to lurking before making the same mistake a second time.
Someone has been watching a bit too many conspiracy videos... Also, don't give the usual bullshit about "I know it all, but I can't tell you. They're listening, you know!".
Smell that?!? I smell newbies!
Van Eck is not the exclusive domain of those in flying in black helicopters molesting cattle. There are plenty of countermeasures in place to prevent a determined attacker from compromising your information. Many of them now off the shelf technology.
The PC-blade configuration saves space, but more importantly it helps Eglin meet the Defense Department's security requirements regarding electromagnetic emissions. These so-called "Tempest" guidelines, also known as Emission Security, are designed to prevent the compromising emanations generated by microprocessors, PCs, monitors, printers, and even electric typewriters from being propagated via telephone lines, power lines, water pipes, grounding wires, and other media. Emission Security stipulates, for example, that a computer storing or accessing classified data must be at least 1 meter away from any conductive media and windows, which can dictate the parameters of users' workspaces.
[...]
Still think Van Eck is X-Files bullshit?
Nonnumquam cupido magnas partes Interretis vincendi me corripit
It'll get quiet again in January when their grades come in and they get their asses ripped out by their parents for wasting their time on web boards and chat instead of doing their homework.
Of course, many will be back in June, just in time for con to be canceled again.
Last edited by ndex; December 3, 2004, 22:08.
Reason: fat fingers
well since this thing was already brought back from the dead, i'll mention that i find it interesting that all of these studies and papers were written mid 80's, yet my father, who worked on communications for submarines, was trained in TEMPEST in 1975, and they weren't allowed to talk about it then. apparently they had problems with the russians using TEMPEST to tap into ships/subs systems while they were docked. there was also a russian embasy close to treasure island, and there were hundreds of antennas pointed towards the base on treasure island at all times, although they never officially cought the russians using any sort of TEMPEST equipement
Last edited by Noxnoynol256; December 20, 2004, 08:47.
Along these lines I've heard war stories about how during the cold war KGB and CIA agents would conduct Van Eck attacks against one another in Berlin. Each time, they'd 'accidently' let it slip to their adversary how far away they were when they did it, thus creating a bit of a game between the two agencies as to who could do it from a greater distance.
I return whatever i wish . Its called FREEDOWM OF RANDOMNESS IN A HECK . CLUSTERED DEFEATED CORn FORUM . Welcome to me
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