Could someone please tell me what will happen with websites setup with privacy= "allow for session" affter one upgrades to version 88? Thanks.

You can still create a cookies allow for session exception via Manage Exceptions.

• Options/Preferences -> Privacy & Security
  Cookies and Site Data: "Manage Exceptions"

There are also prefs to make third-party cookies session cookies.

• network.cookie.thirdparty.nonsecureSessionOnly
• network.cookie.thirdparty.sessionOnly

Firefox 82+ comes with a "Redirect Tracking Protection" feature to purge tracking cookies for websites that haven't been visited recently automatically.

• privacy.purge_trackers.enabled

See also:

• https://blog.mozilla.org/security/2021/02/23/total-cookie-protection/
• https://blog.mozilla.org/security/2021/03/23/introducing-smartblock/

Thanks, cor-el.

If I understand you correctly:

- when I will upgrade from Firefox 86 that I use now to Firefox 88, I will not loose what I have now set for privacy, including the Exceptions for session only. - since I am using Firefox 86 and the "Redirect Tracking Protection" feature was enabled as of Firefox 82, I am benefiting from it now (I do not have to do anything to enable it).

I am using CUSTOM settings for privacy with all cookies in all windows, tracking content, cryptomimers, fingerprinting blocked.

Are the TotalCookie and SmartBlock features enabled with CUSTOM? Thanks.

See also:

• https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection

I am using CUSTOM settings for privacy with all cookies in all windows, tracking content, cryptomimers, fingerprinting blocked. Are the TotalCookie and SmartBlock features enabled with CUSTOM? Thanks.

Total Cookie Protection isolates third party cookies so they can't be used for cross-site tracking -- this is also called dynamic First Party Isolation. If you block ALL cookies, then Total Cookie Protection doesn't have anything to do. If you have exceptions, then Total Cookie Protection will isolate cookies from those sites.

Thanks jscher2000 for the clarification about what Total Cookie protection does. So I am benefiting from it even with my custom settings as I do have some exceptions (forced to set them for a few websites I need that would not work if they were not allowed to do what they wanted).

Thanks cor-el for the additional link, but it doesn't address my questions. I am sure that my questions sound silly to someone who knows the browser inside-out., so sorry about that. If nothing else, when you have a moment, it would really help me if you confirmed that my 2 assumptions are correct.

Probably the Smart Block feature doesn't do anything in conjunction with my Custom settings.