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  • CAPTCHA techniques.

    T.E.I. of Crete, School of Engineering (STEF), Department of Informatics Engineering
    Authors: Tsichlaki, Stella
    Thesis advisor: Triantafyllidis, Georgios
    Publication Date: 24-05-2013
    The spread of the Internet and the provision of free services from several websites had as a side effect their systematic abuse. To address the problem CAPTCHAs are widely used, in order to determine whether a request to ...