New browser-tracking hack works even when you flush caches or go incognito

The article says it works against Chrome, Safari, and Edge. Brave fixed it. Firefox wasn't vulnerable.

The article says Firefox wasn't vulnerable because of a bug. But it might have been intentional.[1]

The researchers opened a bug report saying Firefox should implement the vulnerability a year ago.[2] They said they didn't realize it was a vulnerability at the time and not warning Mozilla later was an oversight.[3]

[1] https://bugzilla.mozilla.org/show_bug.cgi?id=1618257#c9

[2] https://bugzilla.mozilla.org/show_bug.cgi?id=1618257

[3] https://arstechnica.com/information-technology/2021/02/new-b...