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 ...

The Railways’ web traffic filtering technique using a complex captcha with a wavy strikeout pattern is forcing many senior citizens to stay on the sidelines during this festival season unable to take ...

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 ...