CAPTCHA: Telling Humans and Computers Apart Automatically A CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass but current computer …

A CAPTCHA (/ ˈkæp.tʃə / KAP-chə) is a type of challenge–response Turing test used in computing to determine whether the user is human in order to deter bot attacks and spam. [1] The term was …

What is a CAPTCHA? A CAPTCHA test is designed to determine if an online user is really a human and not a bot. CAPTCHA is an acronym that stands for "Completely Automated Public Turing test to tell …

Solve CAPTCHAs to prove your humanity once and for all in this puzzle game. Are you not a robot? We'll find out soon enough.

reCAPTCHA is a free service from Google that helps protect websites from spam and abuse. A “CAPTCHA” is a turing test to tell human and bots apart. It is easy for humans to solve, but hard for...

Beat the Captcha and get a prize. Are you human?

May 1, 2026 · By now, you’ve likely run into a CAPTCHA, short for “Completely Automated Public Turing test to tell Computers and Humans Apart.” It’s a security tool designed to distinguish real people from …

Feb 11, 2025 · In simpler terms, it's a test designed to determine whether the user is a human or a bot. Websites use CAPTCHA to prevent spam, protect against automated attacks, and ensure that only …

Apr 3, 2026 · There's a new scam involving the CAPTCHA box used to verify you're not a robot, and falling for it could mean handing over access to your device.

Oct 22, 2025 · Fake CAPTCHA attacks often begin with deceptive emails containing malicious links, misleading social media ads leading to fraudulent websites, compromised links on legitimate sites, or …