Re: MD5 & bot Question

On Mon, 2007-04-09 at 08:46 -0400, tedd wrote: > At 1:21 AM -0700 4/9/07, Micky Hulse wrote: > >Maybe use flash for this... harder to crack? (Of course, Flash will > >open door to other problems.) > > > >Sorry, coming in on this late. Good work Tedd! Very interesting. > > > M: > > Tijnema showed how MD5 could be used to identify an image file and > crack my arrow captcha. That's really what this thread was about. I > finally came up with enough variations to make it impractical. > > However, this did make me wonder about the images that M$ and others > are using for captchas -- like find the kitty in a set of pictures. > The MD5 application could be used to identify as many pictures as any > spammer would need. So, I think MD5 method, as described in this > thread, would work very well to crack those type of captchas. I doubt Microsoft is using a static image repository for captchas. Cheers, Rob. -- .------------------------------------------------------------. | InterJinn Application Framework - http://www.interjinn.com | :------------------------------------------------------------: | An application and templating framework for PHP. Boasting | | a powerful, scalable system for accessing system services | | such as forms, properties, sessions, and caches. InterJinn | | also provides an extremely flexible architecture for | | creating re-usable components quickly and easily. | `------------------------------------------------------------'