Security researcher on air-gapped systems: acoustic and RF side channels can still leak data
EdSealing · x · 2026-09-18
A security practitioner discusses data exfiltration risks in air-gapped systems: speakers and microphones are the easiest covert channel (which is why modern air-gapped setups remove them), but not the only one — RF monitoring through copper cables via tampered NIC drivers has also been attempted. The author notes there are more ways to transfer data across air-gapped networks, some not public, and suggests such mechanisms could even let agents communicate.
Related event: Air-Gapped Systems Still Leak: Dozens of Side-Channel Escape Routes(2 posts)→
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