Good old UART without the RX connected on one side. | Hacker News

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		SAI_Peregrinus on Oct 9, 2024 \| parent \| context \| favorite \| on: European govt air-gapped systems breached using cu... Good old UART without the RX connected on one side.

aenis on Oct 9, 2024 [–]

Alas, this can be reconfigured without anyone noticing, assuming compromise on both sides.

A diode / photosensor can't.

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