Van Eck Phreaking

[wycx]

See also: https://en.wikipedia.org/wiki/Cryptonomicon

...and the entertaining tangent story involving Van Eck Phreaking and vintage furniture.

[ablation]

"Entertaining" isn't a word I'd use to describe that overlong digression in an otherwise entertaining novel. I love Stephenson, but he sure could use a stern editor at times.

[tomstuart]

Markus Kuhn’s work on “optical eavesdropping” — reconstructing a CRT image from reflected visible light — is really interesting: https://www.cl.cam.ac.uk/~mgk25/ieee02-optical.pdf

[pdkl95]

A related idea:

http://graphics.stanford.edu/papers/dual_photography/

(with video: https://www.youtube.com/watch?v=p5_tpq5ejFQ )

[deutronium]

This SDR implementation looked really interesting for sniffing monitor output - https://github.com/martinmarinov/TempestSDR

Alas I don't have a suitable SDR to try it with.

[Luc]

Holy crap, it works for distances up to 120m using a custom built antenna. https://youtu.be/8HV70b-DpE0?t=23m46s

Though $50 will get you enough of an antenna, amp and SDR to get started...

[lwf]

If you want to play around with Van Eck Phreaking, try https://packages.debian.org/sid/tempest-for-eliza , which lets you listen to MIDI-like music via AM radio from your computer monitor.

[hendekagon]

Unrelated, but at the bottom of http://celeriac.net/sx/public/ is a sonification of Van Eck's sequence