If somebody types in an URL and the server responds with a redirect, the client usually sets the referer, available via $ENV{HTTP_REFER}.

You could ask your partners to tell you their domains, and don't count hits where the referer is available but doesn't match one of your partner's registered domains.

Perl 6 in German

In reply to Re: Detecting redirect fraud? by moritz
in thread Detecting redirect fraud? by Anonymous Monk

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