We have presented a comparative assessment of existing security models in terms of supporting Web-based applications and WFMSs. Although there has been phenomenal growth of Web-based applications on the Internet, access control issues related to Web security have largely been neglected. The RBAC models are expected to provide a viable framework for addressing a wide range of security requirements for large enterprises. However, several extensions to the existing RBAC models are needed to develop workable solutions to adequately address such needs.
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