Sandboxing finally comes to the Firefox web browser. After enabling a (currently) non-restrictive
content sandbox in Firefox Nightly last month,
the organization enabled the upcoming NPAPI plug-in sandbox in Aurora and Nightly versions of the browser as well.
These sandboxes are designed to limit the rights of tabs and plug-ins in the browser to harden and stabilize it.
The plug-in sandbox is deactivated by default and needs to be enabled by the user before it becomes available.
It is sandboxing all browser plug-ins by default when enabled but there is also an option to enable it only for select plug-ins.