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meta: tor uplift: privacy.firstparty.isolate #8

Thorin-Oakenpants opened this issue Feb 18, 2017 · 4 comments

meta: tor uplift: privacy.firstparty.isolate #8

Thorin-Oakenpants opened this issue Feb 18, 2017 · 4 comments


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@Thorin-Oakenpants Thorin-Oakenpants commented Feb 18, 2017

Locked sticky issue for tracking privacy.firstparty.isolate

Last updated: see changelog at foot


🔶 FPI : privacy.firstparty.isolate

🔻 FF51

  • 1260931 enable First Party Isolation
    // user_pref("privacy.firstparty.isolate", true);
  • 1278037 isolate indexedDB

🔻 FF52

🔻 FF53

🔻 FF54

  • 1323644 isolate HSTS and HPKP
  • 1334690 isolate HTTP Alternative Services
  • 1319773#c22 enforce FPI restriction for window.opener
    // user_pref("privacy.firstparty.isolate.restrict_opener_access", true);

🔻 FF55

🔻 FF58

  • 1376971 isolate Page Info media previews to content first party
  • 1376973 favicon of tabs dropdown list does not honor originAttributes
  • 1409045 extensions can control privacy.firstparty.isolate

🔻 FF63

🔻 FF65

  • 1492607 Prevent postMessage communication across first-party when restrict_opener_access = true

🔻 FF68

🔻 FF69

🔻 FF73


  • 1418931 - FPI & IDB clearing on close or manually via clear recent/all history
    • fixed in FF58+
  • 1381197 - FPI & cookies
    • fixed in FF59+
  • 1384657 Pocket & FPI
    • fixed in FF66+



  • 1312655 checkbox in about:preferences#privacy for privacy.firstparty.isolate


this is now obsolete: FPI is not being worked on: it is superceeded by dFPI


@Thorin-Oakenpants Thorin-Oakenpants changed the title meta: privacy.firstparty.isolate meta: tor uplift: privacy.firstparty.isolate Feb 19, 2017
Thorin-Oakenpants pushed a commit that referenced this issue Feb 19, 2017
I have created three issues for tracking items of interest from the tor uplift: #7 `resistFingerprinting`, #8 `FPI` and #15 `the rest`
@arkenfox arkenfox deleted a comment from earthlng Jun 11, 2017

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@arkenfox arkenfox locked and limited conversation to collaborators May 7, 2019
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@Thorin-Oakenpants Thorin-Oakenpants commented Apr 21, 2021

FPI is no longer actively worked on: it will be superseded by dFPI which is being tracked in #1051

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