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The Devil Is Phishing: Rethinking Web Single Sign-On Systems Security
Chuan Yue, University of Colorado, Colorado Springs
One significant trend in online user authentication is using Web Single Sign-On (SSO) systems. Especially, open Web SSO standards such as OpenID and OAuth are rapidly gaining adoption on the Web, and they enable over one billion user accounts. However, the large-scale threat from phishing attacks to real-world Web SSO systems has been significantly underestimated and insufficiently analyzed. In this paper, we (1) pinpoint what are really unique in Web SSO phishing, (2) provide one example to illustrate how the identity providers (IdPs) of Web SSO systems can be spoofed with ease and precision, (3) present a preliminary user study to demonstrate the high effectiveness (20 out of 28, or 71% of participants became "victims") of Web SSO phishing attacks, and (4) call for a collective effort to effectively defend against the insidiousWeb SSO phishing attacks.
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author = {Chuan Yue},
title = {The Devil Is Phishing: Rethinking Web Single {Sign-On} Systems Security},
booktitle = {6th USENIX Workshop on Large-Scale Exploits and Emergent Threats (LEET 13)},
year = {2013},
address = {Washington, D.C.},
url = {https://www.usenix.org/conference/leet13/workshop-program/presentation/yue},
publisher = {USENIX Association},
month = aug,
}
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