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What is CAPTCHA and how does it work?

We take a deeper look at CAPTCHA to find out exactly what it is Isn’t it funny how you have to prove to a computer that you aren’t a robot each time you make a new account on the internet but have you ever wondered why we actually do this, and what actually goes on in the background? What is CAPTCHA? CAPTCHA stands for Completely Automated Public Turing Test to Tell Computers and Humans Apart. It is a type of challenge-response test used in computing to determine whether the user is human. It’s widely used by internet companies to protect themselves from hacks and spam by bots.

Google s speech-to-text can be used to break its own reCAPTCHA

Google’s speech-to-text can be used to break its own reCAPTCHA.   | Photo Credit: Special Arrangement Completely Automated Public Turing Test to Tell Computers and Humans Apart (CAPTCHA) is Google’s service that uses images, audio and text challenges to check whether a human is signing into an account. (Subscribe to our Today s Cache newsletter for a quick snapshot of top 5 tech stories. Click here to subscribe for free.) Google’s voice-to-text API can be used to bypass the audio version of its own CAPTCHA protections, according to technology researcher Nikolai Tschacher. The researcher used an old trick with the latest version of reCAPTCHA and found that the method can be used to break the protection system with a 97% success rate.

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