Do you know those little graphics with a code for you to type in order to foil automatic scripts or bots when registering for a forum or posting on digg? They are annoying and sometimes hard to decipher when the text is very distorted. They are called captchas. PWNtcha is software that can defeat many of the common captcha implementations. Examples of broken and unbroken captchas are given along with a live proof of concept cgi script.