Education site iClicker.com was hijacked last month to display a malicious CAPTCHA test intended to trick users into installing Windows malware. The site operates as an IT service for teachers that ...

Google is testing a reCAPTCHA check that switches on a user's camera and asks them to wave or hold up an open palm.

CAPTCHA tests are often routine and boring, which can cause you to turn off your brain and mindlessly click through them. But that inattention is precisely what one group of hackers is trying to ...

Google has axed its manual Captcha security tool to make way for a new, invisible system that can automatically detect non-human website visitors. Until now, internet users have often been asked to ...

Amazon has landed on a curious way to determine whether you're human or bot during a CAPTCHA test — by testing your understanding of physics. The company has filed a patent application for a new ...

Facebook is running tests of a new CAPTCHA system that requires users to upload a clear photo of their face to prove the account is not fake and belongs to a new person. The new tests were spotted ...

BOT or NOT? This special series explores the evolving relationship between humans and machines, examining the ways that robots, artificial intelligence and automation are impacting our work and lives.