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In claim-based identity management (CBIM) systems, users identify themselves using security tokens that contain personally identifiable information, and that are signed by an identity provider. However, a malicious identity provider could readily impersonate any user by generating appropriate tokens. The growing number of identity theft techniques raises the risk of service providers being deceived...
In various computer security settings, such as when customers use the same passwords at several independent Web sites, security decisions made by one organization may have significant impact on the security of another. We develop a model for security decision-making in inter-dependent organizations described by a linear influence network. In this model, a matrix represents how one organization's investments...
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