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Weili Han, Chen Sun, Chenguang Shen, Chang Lei and Sean Shen Dynamic combination of authentication factors based on quantified risk and benefit Security and Communication Networks 7

Version of Record online: 22 FEB 2013 | DOI: 10.1002/sec.729

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Quantified riSk and Benefit adaptive Authentication Factors combination (QSBAF) balances the requirements for both security and usability in the authentication of an information system and improves the system's ability to respond quickly to emerging risky events. In QSBAF, the authentication factors can be dynamically combined on the basis of quantified risk, benefit measurements, and combination policies. Furthermore, QSBAF provides an adaptive mechanism, which is driven by history data to justify the measurements of risk and benefit.

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