Google reCAPTCHA cracked

Despite denials from Google, a security researcher continues to assert that the Search King’s reCAPTCHA system for protecting Web sites from spammers can be successfully exploited by Internet junk mail panderers. Researcher Jonathan Wilkins published a paper recently that included an analysis of reCAPTCHA’s security. In automated attacks he conducted against the system, he reported he had an alarming success rate of 17.5 percent.
CAPTCHA–which stands for Completely Automated Public Turing test to tell Computers and Humans Apart–is a method for foiling automated attacks by spammers on Web sites. Before a Net surfer can perform at a site a task, such as setting up an email account or adding comments to a blog posting, he or she is presented with the image of a word or phrase that has been distressed in some way. The warped image is intended to thwart scanners and optical recognition software programs used to automate the compromising of web sites by spammers. The idea is that humans can read the characters in the image and type them into a form while machines can’t.,....
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read more about it here..
http://www.allspammedup.com/2010/01/google-recaptcha-cracked/

 

Well that explains where the recent flood of spam accounts came from on my site. I switched to Question and Answer.