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 ...

PHILADELPHIA — If you use the Web, you have probably encountered an annoying invention called a CAPTCHA. They’re the squished-up, stretched and squiggled, color-blotched collections of letters that ...

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 ...