Re:I Hate Captcha- Come beta test my alternative
by kapauldo on Friday September 03, 2010 @02:56PM
(#1660662)
right now there is a set of seed data on there. there will hopefully be new challenges being entered every day, then i plan to use a quarantine, IP logging, etc. strategies to prevent catalog attacks. this is crowd sourced, so ihope to have a lot of people contributing challenges and grow the catalog base. also, i've got image mogrification working, so after a few days of use, each challenge can be modified to prevent automated catalog attacks.
One problem you might have is that classical captcha has 25^6 combinations, and you can generate a new set every x days by changing the algorithm used to generate the images.
Your set is human generated, and it seems that it wouldn't take long to build an answer set to use to break it, especially since it gives you a second and third chance at an answer.
A spammer could build a 'quiz' site with your questions and answers, and store the image hashes along with the answers in a db.