Mozilla to automatically block unwanted Firefox add-ons

Mozilla’s Firefox will soon start blocking browser add-ons installed by other programs until users explicitly approve them, a move that’s designed to give people more control over their web surfing experience. The feature will debut next week in the Firefox Aurora beta, Justin Scott a Mozilla product manager for add-ons said Thursday. It will be activated each time the browser is started. If it detects a new add-on that’s been installed by another program, it will disable it and present the user with a dialog box. The add-on will be unblocked only after the user approves the add-on.

“Third-party applications frequently install bundled add-ons into Firefox as part of their own installation process,” Scott wrote. “While some of these applications seek the user’s permission beforehand, others install add-ons into Firefox without checking to make sure the user actually wants them.”

The new Firefox version will also present users with a one-time dialog box the first time it’s run that prompts the user to approve previously installed add-ons. By default, all those installed by another application will be disabled unless approved by the user. The move comes after Mozilla has blocked several individual add-ons deemed to degrade browser stability and user security.