Board Thread:General Discussion/@comment-26272757-20150807055929/@comment-26456573-20150808194330

Well technically, if you wanted to keep anonymous users from editing pages on your wiki you could just go ahead and protect each and every one of your pages, but that would only really work for smaller wikis. It's a pretty solid idea to make a feature that would allow a wiki to mass protect all its pages from users who aren't logged in.