CAPTCHAs are those now ubiquitous challenges you encounter to prove that you’re a human and not a bot when you go to log in to many websites. As a computer scientist, I see CAPTCHAs as an effective ...

New Skype users report frustration after being presented with a captcha that requires them to solve a complex puzzle ten times before signing up for the service. Tests by BleepingComputer confirmed ...

CAPTCHAs are those now ubiquitous challenges you encounter to prove that you’re a human and not a bot when you go to log in ...

CAPTCHA systems, which are designed to differentiate between human users and automated programmes, have become a pivotal component in securing digital services. Over recent years, the evolution of ...