Abstract: A CAPTCHA is one of the popular, secure methods for securing web content from unauthorized access or malicious intruders. It ensures that the user is not a malicious user but a human being.
Is that CAPTCHA you just encountered real? Find out how fake CAPTCHAs are installing hidden malware and how to stay safe.
See how we created a form of invisible surveillance, who gets left out at the gate, and how we’re inadvertently teaching the ...
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