Studying the Effectiveness of Security Images in Internet Banking

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Provided by: Carnegie Mellon University
Topic: Security
Format: PDF
Security images are often used as part of the login process on internet banking websites, under the theory that they can help foil phishing attacks. Previous studies, however, have yielded inconsistent results about users' ability to notice that a security image is missing and their willingness to log in even when the expected security image is absent. This paper describes an online study of 482 users that attempts to clarify to what extent users notice and react to the absence of security images. The authors also study the contribution of various factors to the effectiveness of security images, including variations in appearance and interactivity requirements, as well as different levels of user motivation.
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