this post was submitted on 17 Jun 2023
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Cybersecurity
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I think I recall reading about this one too. There are all kinds of ways processors and devices leak information. If you have the time and access you can correlate a lot of things to specific hardware and software operations.
I remember hearing something about a typewriter bug that is tuned to determine the key pressed by the particular acoustic signature of each key press. These kinds of outside-the-box solutions really interest me.
EMI and crosstalk is another area where information can leak and there are already snooping devices that work using that.