Board Thread:General Discussion/@comment-5429623-20160130221919/@comment-1807002-20160130235241

If the vandals are abusive you contact Wikia staff and let them know.

Personally, I have found disabling Anon Users can cut back on vandalism - even if it is only temporary (you could suggest to your admins to do this for a trial period so they vandals give up and move on). And if they are sockpuppeting that may need to be forwarded to Wikia staff anyways (if you have 1 or 10 admins on your wiki), Wikia takes sockpuppetting pretty serious.