FF132 Update third-party cookies article Firefox details (ETP Strict 3pc blocking)

[leanderschwarz]

Description

As of Firefox 132 (release October 29th) Enhanced Tracking Protection Strict mode will block all third-party cookies. Developers may still opt-into third-party cookies using CHIPS.

Motivation

The Firefox Privacy Team wants to update all relevant documentation regarding third-party cookie blocking for the Firefox 132 release.

The article should reflect the most recent Firefox (third-party) cookie behavior. Developers should know that CHIPS can be used to opt-into partitioned third-party cookie usage with Enhanced Tracking Protection Strict third-party cookie blocking.

Additional details

See https://bugzilla.mozilla.org/show_bug.cgi?id=1918037.

Since this is my private account I am adding my Mozilla mail in case further questions arise:
lschwarz@mozilla.com

[github-actions]

Preview URLs

• /en-US/docs/Web/Privacy/Third-party_cookies

Flaws (1)

URL: /en-US/docs/Web/Privacy/Third-party_cookies
Title: Third-party cookies
Flaw count: 1

• images:
  • External image URL

External URLs (3)

URL: /en-US/docs/Web/Privacy/Third-party_cookies
Title: Third-party cookies

• https://blog.mozilla.org/en/products/firefox/firefox-rolls-out-total-cookie-protection-by-default-to-all-users-worldwide/ (1 time) (Note! This may be a new URL 👀)
• https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop (2 times) (Note! This may be a new URL 👀)
• https://wiki.mozilla.org/Security/Anti_tracking_policy (1 time) (Note! This may be a new URL 👀)

(comment last updated: 2024-10-10 07:54:06)

[chrisdavidmills]

Thanks for the update @leanderschwarz. I've made a couple of small grammatical suggestions, but nothing major.

Since this is an addition/change for Fx132:

• If it is turned on in release, you should also add an entry for it to the 132 rel notes page, probably under the "Security" heading?
• If it is only enabled in Nightly/beta for now, add a note under the "Experimental web features" section instead, and an entry on the separate Experimental features in Firefox page.

To get an idea of the style of the entries see the previous rel note pages.

Also giving @Rumyra a ping about this one — are you tracking this for the 132 release project?

[leanderschwarz]

Thanks for the quick review and changes @chrisdavidmills, I commited your suggestions!

This will be turned on in release thanks for the suggestion, I already talked to @Rumyra and we will add a note to the developer release notes.

[chrisdavidmills]

@leanderschwarz perfect! Let's get this one merged.