Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
Deprecated
This feature has been removed from the Web. Though some browsers may still support it, it is in the process of being dropped. Do not use it in old or new projects. Pages or Web apps using it may break at any time.
Early versions of Firefox allowed web sites to segregate principals using signed scripts, and request extra permissions for scopes within signed scripts using a function called enablePrivelege. These Privilege Manager feature was not used much (aside from abuse), and its complexity made performance improvements difficult. Signed script segregation was removed in bug 726125, the enablePrivilege prompt was removed in bug 750859, and enablePrivilege itself was nerfed in bug 757046.
The Privilege Manager has been deprecated in Firefox 12 and disabled in Firefox 17.
Sites that require additional permissions should now ask Firefox users to install an extension, which can interact with non-privileged pages if needed.
See also
- Signed Scripts in Mozilla (an archived document)