What is mod_authz_default.so doing on my computer?
mod_authz_default.so is a mod_authz_default.so
belonging to Apache HTTP Server
from Apache Software Foundation
Non-system processes like mod_authz_default.so originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.