Subject:
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Re: New Poll
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Newsgroups:
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lugnet.publish
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Date:
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Tue, 19 Sep 2000 22:34:55 GMT
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Viewed:
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1477 times
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In lugnet.publish, Todd Lehman writes:
> In lugnet.publish, Kevin Loch writes:
> > So now I'm going to have to take the time to write additional protections
> > to discourage most intentional ballot stuffing. That's work I diddn't think
> > I had to do for the "friendliest place on the Internet".
> >
> > Bah.
>
> OTOH, what I tried out was probably not something that most people would
> figure to give a try, so it may not end up being a real issue. If you ask
> people not to vote more than once (like explicitly state that, and make
> that a condition of submitting a vote), that would eliminate any question
> about whether it's OK or not. But ballot stuffing is a huge problem with
> polls on the Internet...going by a cookie may have been what caused the
> strange skews talked about here:
>
> http://slashdot.org/article.pl?sid=00/09/18/1649233&mode=thread
>
> One approach to weed out ballot stuffing attempts which I've used before with
> CLSotW is to hash on a triplet of values, for example string-paste together
> (1) IP address, (2) UserAgent, and (3) int(epochtime/3600) and throw out
> duplicates. That theoretically doesn't stop script kiddles who fiddle with
> the UA string or IP rotation, but may still improve general interaction
> significantly.
>
> --Todd
I did something like that. It checks for frequent occurrances of IP and UA, and
separately checks frequent occurances of IP regardless of UA. It also logs
each successful vote so abuse patterns can be manually detected and the
parameters tuned.
KL
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Message is in Reply To:
 | | Re: New Poll
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| (...) OTOH, what I tried out was probably not something that most people would figure to give a try, so it may not end up being a real issue. If you ask people not to vote more than once (like explicitly state that, and make that a condition of (...) (25 years ago, 19-Sep-00, to lugnet.publish)
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