Ghost in the Radio: Covert Channels over RF

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Presented at BSides London 2025 by

Air-gapped? Think again. Radios aren’t just for walkie-talkies and hams — they’re an overlooked medium for sneaking data where it shouldn’t go. This talk explores how Reticulum can be used to establish covert channels for exfiltrating data, bypassing traditional network controls and flying under the radar either using RF or not! By blending modern mesh networking with old-school airwave hacking, we’ll show how data can “haunt” the spectrum, invisible to conventional defenses.