I have a php poll script in my website, and there's some idiot that uses some Perl/Java/script kiddie tool to post the script in a loop and manipulate the poll results.
How can I detect his flood through the script and ignore the post?
Until now the script would plant a cookie when you vote and if you try to vote again it would check if the cookie exists and if so it will ignore the vote, because the flooder uses some tool and not a browser the cookie is not planted...
The flooder uses more than one shell account to run his posting script so the IP's are different.
What can I do to detect the flooder and ignore him?