A search of the Sun docs found this:
Personal Applications Subpanel
The default applications in the personal applications operate basically the same as in the standard CDE environment.
So, if the standard CDE environment includes Mozilla, then it's Mozilla.
Just because Mozilla may be used with Trusted Solaris, that dosen't mean Mozilla is better than another web browser for security. It's the underlying security implemented with the browser that makes a difference.
With the Trusted Solaris 8 Operating Environment, users and roles can be limited to a specific set of commands and actions that are needed for individuals to perform specific jobs.