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 ...

Jake Peterson is Lifehacker’s Tech Editor, and has been covering tech news and how-tos for nearly a decade. His team covers all things technology, including AI, smartphones, computers, game consoles, ...

It’s not as if it hasn’t been done before, but researchers at Stanford quantified ways to crack the CAPTCHA test many web sites use to make users prove they’re human, and recommended ways to make sure ...

If you’ve ever submitted a form on the internet (and who hasn’t?), chances are you’ve had to transcribe a series of blurry letters and digits to a blank box. It’s a form of challenge-response testing ...