At 12:18 21.02.2001 -0300, Gerardo Richarte wrote:
>Now I'm reading Cryptonomicon by Neal Stephenson where he mentions
>something named Van Heck phreaking (I guess it's his invention).

Heck no :-) -- but Wim van Eck is quite real, as is his famous 1985 paper 
on electromagnetic radiation from monitors, cables etc.  See 
<http://www.shmoo.com/tempest/> or a googling of choice.

Cheers,
Helge