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Update files/en-us/mozilla/firefox/releases/131/index.md
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Co-authored-by: Brian Thomas Smith <[email protected]>
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hamishwillee and bsmth committed Sep 9, 2024
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Expand Up @@ -32,7 +32,7 @@ This article provides information about the changes in Firefox 131 that affect d

- A {{httpheader("Set-Cookie")}} HTTP header with the attribute value of [`SameSite=None`](/en-US/docs/Web/HTTP/Headers/Set-Cookie#none) must now also include the [`Secure`](/en-US/docs/Web/HTTP/Headers/Set-Cookie#secure) attribute. This ensures that cookies set with `SameSite=None` are only ever sent over HTTPS channels. ([Firefox bug 1909673](https://bugzil.la/1909673)).
- [Cookies Having Independent Partitioned State (CHIPS)](/en-US/docs/Web/Privacy/Privacy_sandbox/Partitioned_cookies), or "partitioned cookies", are now supported.
This feature allow developers to opt a cookie into partitioned storage using the [`partitioned`](/en-US/docs/Web/HTTP/Headers/Set-Cookie#partitioned) directive of the `Set-Cookie` HTTP header. When set, cookies have separate storage for each top-level site, and can only be read within the same top-level site they were set on and its subdomains. This blocks cross-site tracking, while still enabling legitimate uses of third-party cookies such as persisting state of embedded maps or chat widgets across different subdomains of a site. ([Firefox bug 1908160](https://bugzil.la/1908160)).
This feature allow developers to opt a cookie into partitioned storage using the [`partitioned`](/en-US/docs/Web/HTTP/Headers/Set-Cookie#partitioned) directive of the {{HTTPHeader("Set-Cookie")}} HTTP header. When set, cookies have separate storage for each top-level site, and can only be read within the same top-level site they were set on and its subdomains. This blocks cross-site tracking, while still enabling legitimate uses of third-party cookies such as persisting state of embedded maps or chat widgets across different subdomains of a site. ([Firefox bug 1908160](https://bugzil.la/1908160)).

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