Reining in Facebook

The Facebook Container add-on was created by the Mozilla Foundation itself, the company that made Firefox. Installing the add-on on the Firefox browser automatically deletes Facebook cookies and logs, according to the add-on description. Mozilla created the add-on in response to the fallout of the Cambridge Analytica scandal where Facebook user information was reportedly misused for the United States 2016 presidential election.
Every time a user logs on to Facebook, the social media site gets its own blue “container” tab. Everything that happens in this container tab will not be shared to other websites. It essentially becomes a self-contained environment for browsing the Facebook site. On the other hand, all activity within the tab will still get tracked by Facebook. Mozilla warns that advertising networks may still try to match a user’s Facebook activity with regular browsing habits.
Mozilla recognises Facebook as a service people still use and find convenient, so they consider the Facebook Container as a limiting tool to help preserve a user’s privacy while still allowing use of the social media platform.
Due to the isolating nature of the container add-on, some Facebook features integrated in websites such as embedded comments and Like buttons will not work.
Meanwhile, Share buttons on websites would still send Facebook information from the website users shared from. This information could later be used to curate content for the Facebook user.