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How to Prevent Form Spam Without Captchas

Posted by ryuzaki0 on from the can't-beat-the-curte-power-of-kittenauth dept.

UnderAttack writes "Spam submitted to web contact forms and forums continues to be a huge problem. The standard way out is the use of captchas. However, captchas can be hard to read even for humans. And if implemented wrong, they will be read by the bots. The SANS Internet Storm Center covers a nice set of alternatives to captchas. For example, the use of style sheets to hide certain form fields from humans, but make them 'attractive' to bots. The idea of these methods is to increase the work a spammer has to do to spam the form without inconveniencing regular users."

10 of 272 comments (clear)

  1. Foiling spammers without a captcha by kfg · · Score: 2, Funny

    Just shoot 'em on sight.

    KFG

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  3. Probably because /. isn't prime real estate by everphilski · · Score: 3, Funny

    Think about it ... the slashdot crowd is technical and informed and "knows better" ... why would someone spambot slashdot? It surely would not be effective...

    1. Re:Probably because /. isn't prime real estate by geoffspear · · Score: 4, Funny

      Think about it ... the slashdot crowd is technical and informed and "knows better"

      You must be new here.

      --
      Don't blame me; I'm never given mod points.
  4. Re:What is wrong with Captchas? by Agent00Wang · · Score: 2, Funny

    Awesome, I'm sitting here during my lunch break at work, checking out that page, and what do I see under some of the sample captchas? Goatse, barely distorted.

    --
    NINJA SPIRIT - The Ancient Art of Insanity
  5. Re:What is wrong with Captchas? by antifoidulus · · Score: 4, Funny

    Yes, but then you exclude southern Republicans from using your site!

    --
    Monstar L
  6. Re:And how... by heinousjay · · Score: 5, Funny

    I think you'd find Slashdot very much more trivial and redundant if all non-Americans left.

    Indeed. I would miss the self-righteous off-the-mark diatribes about how we should run our country. I wouldn't be able to get my daily fill of hubris from people who think they are superior in every way. I don't know what I would do.

    --
    Slashdot - where whining about luck is the new way to make the world you want.
  7. Just serve as application/xml+xhtml by liangzai · · Score: 2, Funny

    This will prevent 100% of the bots from even entering your page... ... plus a few IE users.

  8. Re:What is wrong with Captchas? by Gzip+Christ · · Score: 3, Funny
    Yes, but then you exclude southern Republicans from using your site!
    That's a feature, not a bug.
  9. Re:And how... by Anonymous Coward · · Score: 2, Funny

    "That said, ADA's can go fuck themselves."

    I'm disabled and Can't fuck myself, you insensitive clod!