Reviving TEMPEST Attacks with an Injected Signal
Researchers demonstrated InjectEave: irradiating a device with a radio signal resonating with its internal antennas causes nonlinear components to mix frequencies and emit internal signals. The method recovers audio from headphones and phones, states of smart lights and fans, and with an amplifier works up to 30 meters and even through walls.
- RF irradiation turns modern electronics into TEMPEST transmitters
- Successfully tested on amplifier, ADC, power converter, and MOSFET
- With amplifier, attack range extended to 30 meters, works through walls
- On VoIP phone, spoofed interlocutor's voice in real time
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