Yahoo CAPTCHA Cracked.

Post by boredguy8 » Wed, Jan 30, 2008, 12:19 AM UTC

bayareaguy wrote: post #15

ajkirwin wrote: post #2

A long time ago I decided, that if I were to ever have a captcha system, it wouldn't use ones of that style, which are getting so.. randomized these days, it's hard for a human to read. Frankly, I think knowledge or logic based captchas are the way to go. "Todd is three times as old as Jane is. When Jane was ten years younger, Todd was five times as old as Jane is. How old is Todd?" for example. Sure, takes longer to…

I've always thought that for blog comments, the captcha should actually take the form of a few short SAT-style questions which would test reading comprehension. E.g. "Which one of the following is not one of the points the author is trying to make" "Which of the following best describes the authors' opinion of Java?" "What did the author cite as his source for his labor statistics?"

Post by rms » Wed, Jan 30, 2008, 2:40 AM UTC

Post by derefr » Wed, Jan 30, 2008, 7:53 AM UTC

tomjen wrote: post #4

ajkirwin wrote: post #2

A long time ago I decided, that if I were to ever have a captcha system, it wouldn't use ones of that style, which are getting so.. randomized these days, it's hard for a human to read. Frankly, I think knowledge or logic based captchas are the way to go. "Todd is three times as old as Jane is. When Jane was ten years younger, Todd was five times as old as Jane is. How old is Todd?" for example. Sure, takes longer to…

You better have a really good porn site if you expect me to jump through that kind of holes to use it. Oh and Todd is 60.

Post by Lockheed » Wed, Jan 30, 2008, 9:31 AM UTC

marcus wrote: post #5

ajkirwin wrote: post #2

A long time ago I decided, that if I were to ever have a captcha system, it wouldn't use ones of that style, which are getting so.. randomized these days, it's hard for a human to read. Frankly, I think knowledge or logic based captchas are the way to go. "Todd is three times as old as Jane is. When Jane was ten years younger, Todd was five times as old as Jane is. How old is Todd?" for example. Sure, takes longer to…

I'd take you on that bet. Write the system and I'll write the solver. I drink Guinness :) A better system would be to ask the user to identify the gender of a person based on an image to tell whether the picture is of a dog or of a cat and so on, these tasks are trivial for a person and very very hard for a program.

Post by hhm » Wed, Jan 30, 2008, 9:06 PM UTC

marcus wrote: post #28

marcus wrote: post #14

Earlier quoted context omitted.

Doing CAD - Computer Assisted Diagnosis - working on improving early cancer detection in Mammography.

In a way I understand trying to apply the algorithm manually for each client is wasteful, negotiation with each client is tiring especially when its with a 7B company. I'm thinking about using the idea I got of building a web-service around it, and letting people find their own uses for it. Considering applying to YC with the idea.