Captcha bots rose to notorious fame with the Wiseguys Tickets scam revealed in March in Newark. The four Californians who were part of the Wiseguys Tickets Company, who earned $25 millions from online tickets deals, using captcha bots, among other technologies, to gain unauthorized access to computer systems, and were charged of conspiracy to commit [...]

Highlights from captcha developer Luis von Ahn lecture on human computations and the enjoyable ways humans can collaborate with improving computers human mind’s imitating.

Recaptcha (or reCAPTCHA) is the system that uses the millions of Captcha texts already deciphered by human internet users for the noble cause of digitizing books, newspaper archives and radio shows. ReCptcha is the little comfort we are given for all those challenging captcha texts; thanks to the time and efforts spent by millions everyday [...]

Capthas are not very visually challenged friendly. When the average sighted internet user who is asked to type a couple of distorted half-erased words often cannot tell between l and I, an o and a 0, just imagine what the bespectacled person has to go through when he is about to send a comment or [...]