BuddyPress.org

I am setting up a BuddyPress site and just noticed that when I logged in as a subscriber, I can get to the dashboard and create a post for review. I am trying to figure out how this happened as I thought that Subscribers could not post. Ideally I’d like to remove the dashboard for them, but I’m ok with it as long as they cannot post until they are at least a contributor! Does anyone know in the database or files or where I can look to see how this happened? Thanks, Andrew