PublishSync (malware) has been blocked for your protection.

Why was it blocked?
Add-on spams Facebook accounts and blocks Facebook warnings.
Who is affected?
All Firefox users who have installed this add-on.
What does this mean?

Users are strongly encouraged to disable the problematic add-on or plugin, but may choose to continue using it if they accept the risks described.

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.