User blog comment:Meighan/Wiki Wisdom: Reacting to Trolls and Vandalism/@comment-4793903-20111112204123/@comment-961279-20111114045947

When a person continues to be a problem, you can go to the VSTF Wiki and get help there with a more permanent solution, such as a range block on their IP address(es). In extreme cases, the account may be globally disabled if they've caused enough problems elsewhere.