Changing ownership and permissions on the plugin folder won't help if an end user wants the plugin. Suddenly all iTunes plugins can't be trusted, and shouldn't

Changing ownership and permissions on the plugin folder won't help if an end user wants the plugin. Suddenly all iTunes plugins can't be trusted, and shouldn't have been installed in the past. In fact, I now wonder how far that extends -- if I've plugins for Xcode installed, should I worry about my developer account session in Preferences which auto-downloads and can create signing keys for apps? It's a thought...