Thread:Acebatonfan/@comment-33234295-20170510050747/@comment-4196050-20170510113900

We have an abuse filter in place to catch a lot of vandalism (swearing, mature content, excessive number of edits within a short time frame in a new editor), but it's not perfect. A bot (or abuse filter extension) that automatically blocks users who trigger the filter doesn't assume good faith with editors (I get flagged by the abuse filter all the time thanks to my not so child-friendly language). There's no way for a bot or filter to figure out what is vandalism or what are good-faith edits, which means that a lot of editors who are acting in good faith would be punished.

VSTF has a bot they can run to help undo massive vandal attacks, though we usually are able to revert vandalism quickly enough that we don't need to contact them (I think the last time we needed to contact VSTF was when there was a 1000+ edit massive vandal attack over numerous editors for several days).