Rogue Youtube downloaders and related add-ons has been blocked for your protection.

Why was it blocked?

Malicious add-ons injecting remote scripts and exfiltrating data for monetization purposes. Some of the add-ons are masking themselves as legit add-ons and using various obfuscation tactics to hide their injections.

What does this mean?

The problematic add-on or plugin will be automatically disabled and no longer usable.

When Mozilla becomes aware of add-ons, plugins, or other third-party software that seriously compromises Firefox security, stability, or performance and meets certain criteria, the software may be blocked from general use. For more information, please read this support article.