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/
Since this seems to be a 2013 paper, does any one know whether there has been any update regarding software (except for GPG) or hardware defense against this attack?
The researchers say in the FAQ that they disclosed it to GnuPG and they have mitigated their implementation against their specific attack, but it leaves the question of whether it is still vulrnable to a a more advanced method of audio sidechanneling and whether other encryption implementations, say, OpenSSL, OpenSSH, or Veracrypt, are also vulrnable to similar attacks.