Enterprise information environments increasingly depend on federated identity architectures to provide centralized authentication and authorization across heterogeneous applications, organizational domains, and cloud services. Although federation and multi-factor authentication (MFA) reduce several weaknesses associated with isolated credential management, they also create concentrated trust relationships and technically complex attack surfaces. This research and review paper develops a structured threat-modeling perspective for enterprise federated identity systems by examining authentication flows, federation trust relationships, token-processing components, identity providers, service providers, and MFA mechanisms as interconnected security assets. A STRIDE-oriented analytical model is employed to classify major threat categories, including spoofing, tampering, repudiation, information disclosure, denial of service, and elevation of privilege. The methodology combines architectural decomposition, attack-surface identification, threat classification, vulnerability assessment, and mitigation mapping. The theoretical foundation is strengthened through the supplied literature on robust estimation, nonsmooth optimization, piecewise-affine modeling, machine-learning behavior, and statistical learning. These works provide useful methodological perspectives for analyzing uncertain, nonlinear, and heterogeneous security environments, although they do not directly investigate federated identity. The analysis indicates that the most consequential risks arise at trust boundaries, token issuance and validation points, MFA recovery processes, administrative interfaces, and identity-provider dependencies. The study further demonstrates that security controls should be evaluated as an interconnected system rather than as independent authentication mechanisms. The resulting framework provides a systematic basis for identifying attack vectors, prioritizing vulnerabilities, and designing layered mitigation strategies for enterprise federated identity infrastructures.
Modeling Security Threats in Enterprise Federated Identity Systems: Attack Vectors, Vulnerabilities, and Mitigation Strategies
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Abstract
References
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