I've enabled "Delete cookies and site data when Firefox is closed" but while all cookies gets deleted, some random site data does not. Are my settings wrong, is this a bug, and what even is that data?
Additional Info: I use RFP, want to keep browsing history and site settings. Thank you very much.
8 Comments
HarriPotero@lemmy.world · 8 pts · 2y
Sounds like it's localStorage. But I'd expect that to be covered by "site data" in that option.
It's a bit like cookies, but just for one site. Some think they can avoid cookie consent banners with localStorage.
Firefox has a page on the topic.
viking@infosec.pub · 7 pts · 2y
That could simply be the cookies.txt file with no content whatsoever.
MangoPenguin@lemmy.blahaj.zone · 5 pts · 2y
What is the data it's keeping? 25-100 bytes doesn't seem like there's anything actually there.
tacticalsugar@lemmy.blahaj.zone · 2 pts · 2y
8 bytes is enough to store 18,446,744,073,709,551,616 (18 quintillion) different values, more than enough space for a fingerprint ID. The size of the data shouldn't factor into the potential threat.
MangoPenguin@lemmy.blahaj.zone · 4 pts · 2y
Oh for sure, I just wonder if the size being the same on 2 of them is a result of Firefox storing some default data there on cleanup by accident.
tacticalsugar@lemmy.blahaj.zone · 2 pts · 2y
Oh, I get it now! In my sleep deprived state I missed that two of them had the same size. That seems like a reasonable guess, I'm just paranoid about cookies :P
30p87@feddit.org · 2 pts · 2y
Except the actual content is very likely boilerplate stuff.
tacticalsugar@lemmy.blahaj.zone · 7 pts · 2y
My point still stands. The size of data says nothing about its contents. If OP is concerned about this from a security or privacy perspective, you shouldn't be writing them off because it's only 100 bytes.