No, in Firefox I've seen each private window is a separate unrelated container. | Hacker News

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		legends2k on Jan 27, 2021 \| parent \| context \| favorite \| on: Firefox 85 cracks down on supercookies No, in Firefox I've seen each private window is a separate unrelated container.

legends2k on Jan 29, 2021 [–]

Looks like I was wrong. All private windows and tabs belong to the same temporary container sharing cookies. Temporary Containers remedy this.

[1]: https://medium.com/@stoically/enhance-your-privacy-in-firefo...

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