"[T]hird-party applications frequently install bundled add-ons into Firefox as part of their own installation process," Mozilla explained in its Add-Ons blog. "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"

"These add-ons installed by third parties present a number of problems: they can slow down Firefox start-up and page loading time, they clutter the interface with toolbars that often go unused, they lag behind on compatibility and security updates, and most importantly, they take the user out of control of their add-ons," it continued.

"That's why we're introducing two new features to ensure users have complete control over their add-ons," it added.

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