This isn't really a solution, as spammers and squatters (Zazaki, f.e.) don't hesitate to log in.
If you are referring to the article "Zazaki" on the Tibetan Wikipedia, this was 1. not created (nor ever even edited) by a logged-in user; 2. does not appear to be spam or squatting but rather a misplaced English-language article with real encyclopedic content
Mark