Board Thread:Support Requests - Getting Technical/@comment-4568327-20150125131252/@comment-1188646-20150205084417

A more complete solution to stop anyone from editing root user pages except admins and the user to whom it belongs: article_namespace == 2 & !("/" in article_text) & !("sysop" in user_groups) & user_name != article_text This was just created right now on the spot and has not been tested, so use with caution and at your own risk.

Another related idea might be to block creation/editing of IP address user pages completely. For that, w:c:starwars:Special:AbuseFilter/47 will do the trick.