A team of researchers has devised a method to defeat NuCaptcha, one of the most popular video-based antispam tests on the Internet, and have proposed a solution to increase its resilience to attacks.

If you spend any amount of time on the Internet, you have certainly run across CAPTCHA on a few occasions. CAPTCHA is the security device that forces you to read squiggly words and type them into the ...

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 ...