FROST: Fingerprinting Remotely using OPFS-based SSD Timing [pdf]
14 points by simjnd
by nine_k
0 subcomment
I still have trouble understanding what information can be leaked this way. Apparently it allows to check whether a particular website was visited recently, but the article is vague in this regard. Can anybody ELI55 this?
by Dwedit
0 subcomment
Saw "OPFS" and immediately misread it as OSPF (open-shortest-path-first)
by Bender
0 subcomment
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.
by vivzkestrel
0 subcomment
a bit off topic but on the topic of fingerprinting here, anyone knows how reddit fingerprinting works at a rough level?
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