Adding a CAPTCHA to a Blogspot. One of the unfortunate side effects of leaving articles on your Blogspot blog open for comments is that you may occasionally receive spam -- comments containing ...

Invisible reCAPTCHA: It is an invisible CAPTCHA type, which distinguishes humans from bots by analysing their behaviour on the website. It is not exactly clear how and what behaviour it chooses to ...

So, how does Captcha know that I’m not a robot? This brings us to the previous question of how CAPTCHAs can still work today, even if they’re generally used less frequently than in the past.

A core security mechanism that keeps us all safe online is likely to fail within the next few years. This could cause a massive rekeying of websites and big shifts in how we approach online ...

CAPTCHA -- the wiggly words meant to keep honest those seeking a new e-mail account or access to an online discussion thread -- is now more useful to malware authors than as a security measure ...