TEMPEST, Eavesdropping

Their chief concern doesn't seem to be folks like us, but rather concerns about vans parking outside high tech and defense contractors and slurping up what they can [...]

When banks start signing with private keys, then we get an even more interesting monitoring problem.

And someone asked about building Faraday cages. Don't even try!

Sometimes it is cheaper to build a whole building to be tempest-spec than to buy all tempest-spec electronics. What I have heard about such stuff is solid copper walls and no windows. No exacly your classical Faraday cage; more like your classical Gaussian surface. :-> TEMPEST is an acronym. I don't remember for what. Eric