GeoCAPTCHA - A novel personalized CAPTCHA using geographic concept to defend against 3rd Party Human Attack

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@inproceedings{Wei2012GeoCAPTCHAA, title={GeoCAPTCHA - A novel personalized CAPTCHA using geographic concept to defend against 3rd Party Human Attack}, author={Te-En Wei and Albert B. Jeng and Hahn-Ming Lee}, booktitle={IPCCC}, year={2012} }