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Spammers Use The Human Touch To Avoid CAPTCHA

"The whole premise behind the CAPTCHA is you want to allow users to access your service as long as they're an actual person," Professor Sefan Savage says. (NPR Illustration)
"The whole premise behind the CAPTCHA is you want to allow users to access your service as long as they're an actual person," Professor Sefan Savage says. (NPR Illustration)

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