Air-gap exfiltration is slow: BitWhisper hits 0.002 bps, best known BitJabber just 300 kbps

BlancheMinerva · x · 2026-09-18

In a discussion about whether an air-gapped AI could leak secrets, researcher Blanche Minerva offers hard numbers: Noam's heat-exchange example comes from BitWhisper, which achieved a maximum throughput of just 0.002 bits per second — thermal energy is a terrible channel. The fastest approach she knows of, BitJabber, advertises a maximum of 300 kbps.

She also argues the only conceptually plausible scenario requires an inside and outside agent coordinating — which would mean OpenAI having released, from the air-gapped network if not to the world, a highly misaligned AI that would happily hack its own infrastructure. She considers that highly unlikely.

Related event: Security researcher debunks claims that AI could breach air-gapped networks via side channels(6 posts)→

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