How do you let people create user accounts or post comments on your Web site without letting spam bots in? Simple — make your users prove they’re human. Many Web sites use CAPTCHA (Completely ...

CAPTCHA used to be an easy and useful way for Web administrators to authenticate users. Now it’s an easy and useful way for malware authors and spammers to do their dirty work. CAPTCHA — Completely ...

CAPTCHA solvers like Anti-Captcha can efficiently solve and bypass CAPTCHAs, enabling users to explore the web without restrictions. Although CAPTCHAs can help prevent unauthorized access and spam on ...

Because of its vast reach, and stellar text recognition capabilities, CAPTCHA software has been used in a range of other ways. Take a look.