2019-01-24 at 1:31 AM UTC
Van eck phreaking is passive(mostly?).... Could it be also active? Can you inject intelligible code that the processor can actually read?
Just browsing articles on air-gapped and caged systems and I thought maybe, since you can transmit audio through a speaker without the speaker being powered on, with an RF amplifier because the RF induces voltage/current in the wires.
Directional antenna + amplifier to inject code....? Maybe hide it in normal internet traffic.
2019-01-24 at 7:42 PM UTC
It's possible. I think it'd be more of a government agency that does it though.
2019-01-25 at 4:48 PM UTC
I would imagine a maser would be the most precise way to do this. Hmm.