re once tapped your code is no good any more in article apr colnet cmhnet org res colnet cmhnet org rob stampfli writes with e mail if they can t break your pgp encryption they ll just call up one of their tempest trucks and read the electromagnetic emmisions from your computer or terminal note that measures to protect yourself from i could independently invent about half a dozen right off the top of my head if i had studied advanced e m a little better i could probably come up with a very good system wouldn t a a second monitor of similar type scrolling gibberish and adjacent to the one being used provide reasonable resistance to tempest attacks actually old video games and pinball machines are supposed to work pretty good at blocking em eavesdropping too those things put out a lot of em noise back in the s i read about computer companies putting bunches of games in their buildings for just this purpose not to mention the dane
