On 07/06/16 12:22, Chris McCormick wrote:
 > But a public-facing server would regularly be "tweeting", no?

So you'd need physical access to a public-facing server in order to collect the
acoustic signature.

https://www.tau.ac.il/~tromer/acoustic/

Here the same authors mention this attack:

"Send your server to a colocation facility, with a good microphone inside the box, and then acoustically extract keys from all nearby servers."

Cheers,

Chris.

--
http://mccormick.cx/

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