There is a famous demoBitWhisper where two physically adjacent air gapped machines can…
This is a dev post classified by Jev as Security (a tutorial), kept by the Dev Radar because it carries real work, not commentary.
There is a famous demoBitWhisper where two physically adjacent air gapped machines can be seen sending commands to one another with heat. The video is short, but it's sped up x16 during the test because it takes a long time to transfer even a byte of data this way: - 1 bit ≈ 7.5–60 minutes - 1 byte (8 bits) ≈ 1 to 8 hours, depending on distance and layout I saw someone say that the machines would need special external heat sensors, but that is not the case. It's done using the temp sensors already present in the cpu. The heat dissipates quickly over a short distance, which means that the c
Posted by spuddy (1.9k followers) 2 days ago · 2 likes · 90 views · view the original post on X. Kept by the Dev Radar as Security.
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