A Investigating User's Perspective of Web Single Sign-On
A Investigating User’s Perspective of Web Single Sign-On: Conceptual Gaps, Alternative Design and Acceptance Model SAN-TSAI SUN, ERIC POSPISIL, ILDAR MUSLUKHOV, NURAY DINDAR, University of British Columbia KIRSTIE HAWKEY, Dalhousie University KONSTANTIN BEZNOSOV, University of British Columbia Manuscript submitted to ACM Transactions on Internet Technology on January 9th, 2012. Received minor revision decision on October 31th, 2012. Major service providers such as Google, Yahoo, Microsoft and Facebook are competing for the online identity landscape through provisioning of web single sign-on (SSO) solutions. Those billions of SSO- enabled user accounts attract millions of supporting websites; however, average users’ perception of web SSO is still poorly understood. Through several user studies, this work evaluates users’ experience, investigates their perceptions and concerns when using web SSO for authentication, and explores possible improvements. We found several behaviors, concerns, and misconceptions that hinder our participants’ adoption intentions, from inadequate mental models of web SSO, to the reluctancy to have their personal profile information released to SSO-enabled web sites, and to the reduction of perceived web SSO value due to the employment of password management practices. Informed by our findings, we offer a web SSO technology acceptance model, and suggest design improvements. Categories and Subject Descriptors: D.4.6 [Security and Protection]: Authentication General Terms: Security, Human Factors Additional Key Words and Phrases: Web Single Sign-On; OpenID; OAuth; Usable Security; ACM Reference Format: Sun, S., Pospisil, E., Muslukhov, I., Dindar, N., Hawkey, K., Beznosov, K. 2012.Investigating User’s Per- spective of Web Single Sign-On: Conceptual Gaps, Alternative Design and Acceptance Model.
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