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Normal Topic Double Verification Code? (Read 2,112 times)
stoneyjr
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Re: Double Verification Code?
Reply #3 - Sep 16th, 2011 at 10:33am
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You might combine language and scene interpretation.  For example if you have a randomly placed bowl of objects with a busy background behind it.  You might ask several questions that are not that difficult for a human, but are very difficult for current machine learning algorithms. 
How many pieces of fruit are in the bowl? 
Click on the fruit that is crunchy.
How many animals that ryhme with pen? and how many crayons?
  
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stoneyjr
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Re: Double Verification Code?
Reply #2 - Sep 16th, 2011 at 10:22am
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Captcha human authentication strings are easily defeated using machine learning algorithms.  Adding a second Captcha string would not reject that many more bots.  You need to add an additional human authentication method that is more difficult for the current machine learning algorithms to defeat.  ( hint: knowing more about what makes something difficult for machine learning used in computer vision problems would help you design a more difficult task that requires a human ).  Look at Vincent Rabaud et Al paper on "Soylent Grid" that demonstrates a potential authentication method. ( You can make it even more difficult for machines by doing a few extra things to the images )
  
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Captain John
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Re: Double Verification Code?
Reply #1 - Jun 14th, 2011 at 6:04pm
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Why double or triple the verification code ?  With the options available to control the viewing of the captcha from easy to very difficult it would seem redundant since it can't be hacked, ONLY the human eye can replicate the code needed. 
   Blocking humans is impossible, if you want humans to join.  It is possible to Block entire countries of humans by IP Blocks or Spam domains by use of the Guardian.
  
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L_ith
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Double Verification Code?
Jun 11th, 2011 at 2:06am
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Hey guys, just curious whats the latest on stopping spam bots on YaBB 3.0? i know 2.4/2.5 has that 'Your Verification Code'

is there anything else like this or more advanced in YaBB 3.0?


or maybe add a double or triple (Verification Code) ? sounds crazy i know but security is good.

just curious cheers


would be nice to add an option on the reg.
  
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