How do I report a user?

For a past couple of month this user named is changing stuff for no apparent reason. He is even naming street to his name randomly. Is there a way to stop this guy?

Here is an example

You should explain the situation in an email to the OSM Data Working Group

Thank you. :wink:

Spot on. For info, there’s a bit more information over that the Foundation wiki’s Data Working Group page - has a “I’ve seen a problem; what should I do?” section.

Andy (from the DWG)