| `restricted_domains` | An array of domains on which content scripts can't be run. This setting can be used only for the default configuration.
| `updates_disabled` | (Firefox 89, Firefox ESR 78.11) Boolean that indicates whether or not to disable automatic updates for an individual extension.
| `default_area` | (Firefox 113) String that indicates where to place the extension icon by default. Possible values are `navbar` and `menupanel`.
+| `temporarily_allow_weak_signatures`| (Firefox 127) A boolean that indicates whether to allow installing extensions signed using deprecated signature algorithms.
**Compatibility:** Firefox 69, Firefox ESR 68.1 (As of Firefox 85, Firefox ESR 78.7, installing a theme makes it the default.)\
**CCK2 Equivalent:** N/A\
places.
pref.
print.
+privacy.globalprivacycontrol.enabled (Firefox 127, Firefox ESR 128.0)
privacy.userContext.enabled (Firefox 126, Firefox ESR 115.11)
privacy.userContext.ui.enabled (Firefox 126, Firefox ESR 115.11)
signon. (Firefox 83, Firefox ESR 78.5)
| security.insecure_connection_text.pbmode.enabled | bool | false
| If set to true, adds the words "Not Secure" for insecure sites in private browsing.
| security.mixed_content.block_active_content | boolean | true
-| If false, mixed active content (HTTP and HTTPS) is not blocked.
+| If set to true, mixed active content (HTTP subresources such as scripts, fetch requests, etc. on a HTTPS page) will be blocked.
+| security.mixed_content.block_display_content | boolean | false
+| If set to true, mixed passive/display content (HTTP subresources such as images, videos, etc. on a HTTPS page) will be blocked. (Firefox 127, Firefox ESR 128.0)
+| security.mixed_content.upgrade_display_content | boolean | true
+| If set to true, mixed passive/display content (HTTP subresources such as images, videos, etc. on a HTTPS page) will be upgraded to HTTPS. (Firefox 127, Firefox ESR 128.0)
| security.osclientcerts.autoload | boolean | false
| If true, client certificates are loaded from the operating system certificate store.
| security.OCSP.enabled | integer | 1