Bomb Law Reporter - special edition

[Faustine]

Bill Stewart wrote:
At 03:31 PM 08/20/2001 -0400, Faustine wrote:
>Eugene wrote:
>
> > and switching to an emission poor system (chucking CRT for LCD
> > would do plenty for starters)
>
>Actually, that won't help you much: emissions from LCD screens can be
>easier to decode than those from monitors. Active matrix LCD screens create
>very strong and clear emissions--as long as a display uses some form of
>pixel sweep where each pixel is activated at a unique time, then the
>emissions are simple to decode. Though in theory LCD screens emit less than
>a VDU, recent EMC controls have greatly reduced emanations from VDUs--with
>the result that the graphics card will often be the greatest source of
>compromise.

>Also, most laptops have a VGA connector on the back, which leaks heavily.
>An external VGA screen might be a bit quieter, because the cables can be 
>shielded, but it still depends on how capable the attacker is.
>And basically, if the Feds are sitting outside your house listening
>to whatever they can from your computer, you've already blown your 
>security :-)Shoulda used Blacknet.


Have you happened to have seen any good papers on constructing do-it-
yourself cheap, effective, portable shielding? Probably might as well ask 
for the moon too while I'm at it, but it's worth a shot!

~Faustine.