electromagnetic (and other esoteric means of) eavesdropping - PowerPoint PPT Presentation

electromagnetic (and other esoteric means of) eavesdropping alexandru totolici Saturday, July 9, 1

electromagnetic many devices emit electromagnetic radiation during normal use the produced electromagnetic radiation can be used to reconstruct information Saturday, July 9, 2

Saturday, July 9, 3

Van Eck Phreaking Saturday, July 9, 4

Van Eck Phreaking Demo http://www.youtube.com/watch?v=Xm_j9al13Wg Saturday, July 9, 5

Keyboard Sniffing Saturday, July 9, 6

Keyboard EM Sniffing I http://vimeo.com/2007855 Saturday, July 9, 7

Keyboard EM Sniffing II http://vimeo.com/2008343 Saturday, July 9, 8

TEMPEST Saturday, July 9, 9

acoustic many devices emit sound during normal use the produced sound can be used to reconstruct information Saturday, July 9, 10

Key Click Sniffing: • use a laser mic to pick up sound reflections from the keyboard lid • trained sets (unhelpful, need one for every type of keyboard) • untrained sets, use HMM/neural nets to identify likely words (in English) Saturday, July 9, 11

Printer Sniffing: • similar approach, based on listening in on the sound made by the dots and inferring the corresponding characters Saturday, July 9, 12

http://pinboard.in/u:toto/t:udls-em/ Saturday, July 9, 13