An anonymous reader writes: A Facebook ad for an amusement program that produces a caricature of your real face is actually a disruptive browser hijacker. Facebook malware is nothing surprising, but what makes this one unusual is that the malware is actually available in the form of a Firefox addon. Furthermore, it's even listed on Mozilla's official addons site at addons.mozilla.org.
In addition to disrupting normal browser function, this addon is designed to be difficult to remove, and leaves behind a configuration mess that must be manually cleaned up. It's effectively a malware addon.
I find it very disturbing that this hostile and disruptive addon is listed through Mozilla's official addon site, as this gives it an appearance of legitimacy that could easily lead many users to think it is safe to install.