FROST: Fingerprinting Remotely using OPFS-based SSD Timing [pdf]

(hannesweissteiner.com)

13 points | by simjnd 3 hours ago

3 comments

  • Dwedit 37 minutes ago

    Saw "OPFS" and immediately misread it as OSPF (open-shortest-path-first)

    • Bender 2 hours ago

      I see they are testing this on a Mac. I am curious what the test results look like if the users home directory or even the dot directories are tmpfs. On Linux .bash_login can repopulate dot directories from a archive directory think skeleton files and the dot directories can be ephemeral mounted as tmpfs. The person can have a command to commit their ephemeral directories back to the archive if they want to "keep their changes" so to speak. Or automate it on .bash_logout.

          du --max-depth 0 -h -c .cache .config .local
          767M    .cache
          278M    .config
          2.2M    .local
          1.1G    total
      
      It's a bit of space on this CachyOS laptop but it's doable.
      • vivzkestrel 1 hour ago

        a bit off topic but on the topic of fingerprinting here, anyone knows how reddit fingerprinting works at a rough level?