I have a website e-mail form. I use a custom CAPTCHA to prevent spam from robots. Despite this, I still get spam. Why? How do robots beat the CAPTCHA? Do they use some kind of advanced OCR or just get ...

Loathe it as we do, the captcha goes a long way to preventing websites from being inundated with spam comments produced by nefarious software. However, there’s room for improvement, and rather than ...

The goal of the Turing test is for a human to work out whether they're communicating with another person or a machine. Computers have gotten better at imitating people but they've also improved at ...