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Ning Xu
Ning Xu
Microsoft
Computer security
Computer science
Artificial intelligence
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CAPTCHA
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Captcha as Graphical Passwords—A New Security Primitive Based on Hard AI Problems
2014
IEEE Transactions on Information Forensics and Security
Bin Zhu
Jeff Yan
Guanbo Bao
Maowei Yang
Ning Xu
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Citations (83)
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