This list is created from the perspective of a system administrator - and these are cited as common ROGUE INSTALLATIONS of applications which have, or have had in the past a major security vulnerability. Firefox is commonly installed by end users - not by enterprise administrators. Firefox has, in the past, had vulnerabilities. They've been patched quickly, but the end user rarely patches a damn thing. Since this is a rogue installation, the administrator now has a potential hole in their network because they can't patch it. The mozilla team isn't very willing to work with admins to make firefox enterprise-administratable, either. If you're going to do it, you have to hack up all kinds of cobbled together scripts and ****** to get all the settings right, and enforce them.