There may also be a bug either in the CAPTCHA mechanism itself or the surrounding application, allowing someone to bypass the CAPTCHA.īy the way, the W3C article Inaccessibility of CAPTCHA : Alternatives to Visual Turing Tests on the Web explains as well how CAPTCHAs could be compromised: ask for people to fill CAPTCHAs for money, just like ProTypers does. Two of the easiest ways to get through CAPTCHA: How can I prevent this? Should I change to another type of CAPTCHA? Why? How do robots beat the CAPTCHA? Do they use some kind of advanced OCR or just get the solution from where it is stored? I use a custom CAPTCHA to prevent spam from robots. This Q&A is part of a weekly series of posts highlighting common questions encountered by technophiles and answered by users at Stack Exchange, a free, community-powered network of 100+ Q&A sites.
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