system-bus-radio VS TempestSDR

As opposed to AM: https://fulldecent.github.io/system-bus-radio/

https://github.com/fulldecent/system-bus-radio (out)

here is an example: https://fulldecent.github.io/system-bus-radio/

https://fulldecent.github.io/system-bus-radio/ - Tested on MacBook Air / Chrome with AM tuner at 1560 kHz. See field reports for other equipment and frequencies.

Probably because to get this stuff to work is really hard in practice.

Several years ago, we were playing with https://github.com/fulldecent/system-bus-radio to work, but we couldn't, even though we had the right MacBooks.

Have you gone fully paranoid and your air-gaped system is in a Faraday cage inside an anechoic chamber? Things like bus radio [1], coil whine and power fluctuations can be used (it has been shown) to exfiltrate data.

[1] https://github.com/fulldecent/system-bus-radio

TempestSDR

Look into SDRs and performing a tempest attack. I’ve done it in the past https://github.com/martinmarinov/TempestSDR

Also possible with a $20 USB dongle and this open-source software.

This is actually an open source project which is a software defined radio for monitoring a monitor https://github.com/martinmarinov/TempestSDR

Additionally, another implementation, TempestSDR, has some built in autocorrelation logic to help you determine resolution and refresh rate of the target. There's some good documentation and a masters thesis from the author of TempestSDR here: https://github.com/martinmarinov/TempestSDR/tree/master/documentation

If you want to see examples of this method, this GitHub project is able to remotely read computer monitors, and if you own a macbook air, this project can transmit radio signals