Hackers overtake CAPTCHA , researchers look to change to GOTCHA 10/14/2013 - 00:00 Internet will be familiar with the Completely Automated Public Turing test to tell Computers and Humans Apart, otherwise known as CAPTCHA. These are the distorted pieces of texts that you are regularly asked to identify to prove that you are human. Their goal is to prevent bots from accessing websites, to prevent them leaving spam, for example.
