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Supercookie: Browser Fingerprinting via Favicon (2021)

(github.com)
357 points vxvrs | 3 comments | 16 Nov 25 19:39 UTC | HN request time: 0.074s | source
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breppp ◴[16 Nov 25 20:21 UTC] No.45948089[source]▶
I was sure this has been a thing for a while, either that or safari has a UI bug since forever.

I regularly get the wrong favicon in specific sites, for example ars technica favicon in reddit

replies(7): >>45948097 #>>45948671 #>>45949522 #>>45949581 #>>45950046 #>>45950748 #>>45951573 #
snailmailman ◴[16 Nov 25 23:48 UTC] No.45949581[source]▶
My hacker news icon has been stuck as the icon for a weather site that I sometimes check. It’s been stuck that way for close to a year now, and has survived an iOS update too.

It persists across profiles and into private browsing mode.

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1. 1718627440 ◴[17 Nov 25 11:25 UTC] No.45952664[source]▶
You guys have favicons? I don't have any in my tabs, but maybe I have turned that of at some point. I'm using Mozilla Firefox.
replies(1): >>45953896 #
2. dewey ◴[17 Nov 25 14:32 UTC] No.45953896[source]▶
Firefox and Safari both have favicons in the tabs.
replies(1): >>45954818 #
3. 1718627440 ◴[17 Nov 25 16:03 UTC] No.45954818[source]▶
Yes, I also have them in general, e.g. on about:newtab, but for HN, there isn't any shown on the tab (there is if I make a bookmark). Maybe I messed something up.