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It is possible to extract encryption keys by recording coil whine with a phone next to the computer (2013 paper) (web.archive.org)

submitted 11 months ago* (last edited 11 months ago) by [email protected] to c/[email protected]

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A more TLDR article about this: https://www.extremetech.com/defense/173108-researchers-crack-the-worlds-toughest-encryption-by-listening-to-the-tiny-sounds-made-by-your-computers-cpu

FAQs from the researchers: https://web.archive.org/web/20230130225254/http://www.cs.tau.ac.il/~tromer/acoustic/

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[–] [email protected] 1 points 11 months ago

but, you surely will agree, this is pretty devastating for any target. known cleartext may be trivial to insert into a targets workflow, and the confirmed recovery of a private key is potentially a massive payoff.

the ability to process and extract sensitive information from the local environment has gotten seriously scary.