No abstract

No abstract

In this paper, we introduce the concept of PublicKey embedded Graphic CAPTCHAs and their usage as an AntiPhishing mechanism. These 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. By virtue of a built-in one/two-way implicit challenge mechanism and this verifiable association between the image object and the specific sub-pattern of the Public Key, they help in detecting/resisting automated or human-assisted Phishing attacks.

No abstract

No abstract