[Foundation-l] Malicious user javascript

[kelvSYC]

First of all, I hope that you can forward it off to wikitech, but it  
seems that a malicious user at Wikibooks used their user JS to do  
some page move vandalism (see [[b:en:User:Vandel Damon/monobook.js]]  
for the JS in question).  It's not much of a security loophole as it  
is undesirable for the wiki community, seeing that a lot of people  
would have to undo a lot of page moves.

If there was some way in the back end to prevent this, it would be  
appreciated.