Can't fully reproduce with Firefox 85

[AlphaJack]

I can't reproduce my IDs with Firefox 85 (Linux). I don't know if it is related to this, they only mention cross-site supercookie protection.

Chromium 88 seems to be still vulnerable.
Tabs underlined in blue are part of the same container (Firefox extension), others (left to right) are vanilla Firefox, private Firefox and vanilla Chromium.

First try:

After restarting my browsers:

[arobase-che]

Can't totaly reproduce on Firefox 85.
Works when I check my id a second time. Failed to retrieve it if I close Firefox.

I got the option "Delete cookies and site data when Firefox is closed".

[pachainti]

Firefox 85 provides supercookies protections. You have to close and restart the browser.

[jonasstrehle]

I can't reproduce my IDs with Firefox 85 (Linux). I don't know if it is related to this, they only mention cross-site supercookie protection.

Seems like the latest version of Firefox (v85.0 under Linux) is no longer vulnerable to this attack scenario. Good to know, thank you!

[evoactivity]

I can't reproduce for Firefox 85 (Windows), the demo gives me different id's

[pachainti]

Please read here.