Re:Typewriters are back, and we have Edward Snowden to thank
by DrStalker on Wednesday November 12, 2014 @11:58PM
(#8600001)
If you're willing to use a typewriter you're willing to use a computer with no network connection, so all you need to do is block radio transmissions. A faraday cage can't cost that much compared to the other costs involved in espionage.
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Re:Typewriters are back, and we have Edward Snowden to thank
by MarkPNeyer on Thursday November 13, 2014 @01:14AM
(#8600194)
People can hop airgapped networks using speakers and microphones.
Re:Typewriters are back, and we have Edward Snowden to thank
by eksith on Thursday November 13, 2014 @01:31AM
(#8600227)
I had a discussion with a friend about The Thing[1], an invention by Léon Theremin and how ingenious it was that it required no external power source and can be turned on/off at will by transmitting at a certain frequency. The trouble with this is that it's still possible to identify the retransmission. In fact, this was how it was discovered.
What if the room had a length of surgical or other type of long tubing embedded into the wall so that the detector was a fair distance away? Essentially, a very crude stethoscope originating in a wall outlet or other place in the room that already has an orifice(s) and terminating at another location with a passive resonator.
By decoupling the transmitter from the audio source by using a non-electronic medium, it's possible to still eavesdrop on keystrokes even in an em-shielded room.
Re:Typewriters are back, and we have Edward Snowden to thank
by jMyles on Thursday November 13, 2014 @12:00AM
(#8600008)
> block radio transmissions
To what attack are you referring here?