lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <8e5ffb560608200818u2bbb17ebkfc77fc5f4b6e7ffd@mail.gmail.com>
Date: Sun, 20 Aug 2006 21:03:30 +0545
From: "Bipin Gautam" <gautam.bipin@...il.com>
To: full-disclosure@...ts.grok.org.uk
Subject: Re: Re: Tempest today

>With double layered windows (double glazed), the ability to use
>triangulation between laser TX and rx means it may be possible to capture
>vibrations from the inner glass panel.


>Infra-red absorbtive/scattering glass makes the most sense, or external
>curtain materials, but we are int purpose built locations at this point.
>

a poor mans solution should be THE semi opaque glass we use in kitchen
that has those INCLINED trangular cut surfaces throughout while the
granular surface on the other side. Any light (though depends on the
wavelength) would bounce to the extreme right or left. Moreover,
without a small bug in the windows itself (say a prism) it would be
difficult to capture the reflected beem anyways. or yes as u
suggested, scattering glass.

a double layered window with distinct difference in refractive index
of  exterior & interior glass "might" be a better solution. I
experimented a simple solution. A 3v DC motor pressed in the glass
window to cause a small noise & glass vibration would almost
completely remove the chances for evasdroping. (but hey it was a
extermely simple amature solution to defeat my own amature equpment
anyways. Any coment on this, welcome!)

-bipin

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ