11-18-2008
I think the wired keyboard is safe. It's certainly possible to pick up the emanations from any cable, but that doesn't make it easy, the same way you can't get monitor-sniffing devices off the shelf even though the tech's ten years old. It's something for the government to worry about, sure, but I think TEMPEST's already got that covered. Older keyboards often have shielded cables, too. With a high-gain antenna, I imagine you'd start either hitting walls or finding more than one keyboard...
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