“Getting the information from the bugs is where SDRs come in. Ossmann found that using the radio to emit a high-power radar signal causes a reflector to wirelessly transmit the data from keystrokes, say, to an attacker. The set-up is akin to a large-scale RFID- chip system. Since the signals returned from the reflectors are noisy and often scattered across different bands, SDRs versatility is handy, says Robin Heydon at Cambridge Silicon Radio in the UK. ‘Software-defined radio is flexibly programmable and can tune in to anything,’ he says.”
Posted on: Fri, 20 Jun 2014 15:15:05 +0000
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