I didn't find any other topic like this, so:

Imagine the following scenario:
User A and B (possibly C,D,E...) want to abuse the system like the following.

  • A asks some simple question.
  • B answers the question correctly (since it's simple and ontopic, i.e. a regular SO question, but possibly a duplicate).
  • C,D,E... all upvote the answer of B and the response of A.

If this happens repeatedly, A and/or B can quickly gain a lot of reputation.

Is there some automatic analysis tool that shows the moderators such "clusters" of abusers?

Or are the moderators able to deal with such situations manually?


There are several levels of protection against such voting abuse/fraud:

  • Automated scripts that detect anomalous voting patterns
  • Moderator tools that show suspicious voting patterns
  • Moderator tools to investigate specific users

The details are not public, as that knowledge could help to get around those measures.

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