Wikiscanner and wikileaks
Wikipedia is the well-known free content encyclopedia, which allows anyone in the world to edit, update and modify data. As a consequence, the information at wikipedia may be wrong and can be misleading as an education resource.
As mentioned anyone can “edit” content. Some can be done anonymously. But there have been situations where controversial content have been modified/removed anonymously. That’s where Wikiscanner comes in. This scanner can identify who/where/how often an IP address is modifying content. Conversely,
Wikileaks claim they can ensure that any content (controversial or not) can be placed anonymously and be protected.