So there it is. A full guide to breaking CATPCHA’s which hopefully will be used for more good then evil. I honestly believe that while someone could come along and do some damage using this code, to really do anything dangerous you need to understand it and modify it quite a lot. To those who are getting ready to flame me on this remember that these techniques are not difficult to learn and anyone with the intent of breaking your CAPTCHA will do it, either programmatically or by tricking or paying people to do it for them. Perhaps by seeing how easy it is you will consider alternate methods of protecting your webforms. Still have questions? Need more detail? Buy the book.