IBM Endpoint Manager for Remote Control to has been blocked for your protection.

Why was it blocked?
Certain versions of the IBM Remote Control add-on could leave a machine vulnerable to run untrusted code.
Who is affected?
All users who have these versions installed. The latest versions of this add-on aren't blocked, so updating to them should be sufficient to fix this problem.
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.