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In this paper, the authors introduce the concept of three way security using Public-Key and the usage of Phishing mechanism. Whenever the user is enters the username and password, a mobile alert will be taken place. This type of security can be implemented in CAPTCHAS where the message alert will be activated whenever the user enters the wrong login details for three times. Also, the CAPTCHAs contain a user-specific image object and a pattern (for e.g. a sub-string) of a secure channel invariant (for e.g., the Public-key of the authentic web-server), wherein the image object and pattern are linked.
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