RE: $400 million network upgrade for the Pentagon

[Vadim Antonov <avg () exigengroup com>]

On Wed, 14 Aug 2002, Brad Knowles wrote:

> At 5:13 PM -0500 2002/08/13, Blake Fithen wrote:
>
> >  Is this sensitive info?   Couldn't someone (theoretically) aim a
> >  "beam" at an unoccupied office and another at their objective
> >  office then filter out the 'noise'?
>
>       Actually, I don't know for sure how it's implemented.  They may 
> have separate sound streams for each window.  Moreover, this was a 
> few years ago (I left in 1995), and there may have been changes since 
> then.  It would certainly be a lot easier to use individual speakers 
> fed by electrical wiring, than pumping a lot of air around from a 
> central location.

Even easier is to glue a piezoelectric transducer to the glass and feed
it some noise modulated to look like speech from a gadget which may cost
entire $30 in parts.  Detecting IR laser emissions and sounding alarm is
also a good idea :)

--vadim