Securing a composite business service delivered as a software-as-a-service: Part I, secure multi-tenancy with WebSphere Portal Server

A composite business service (CBS) introduces many new challenges (for example, multi-tenancy) for security in an SOA solution. In this two-article series, a few security scenarios are examined in a proof-of-concept CBS software-as-a-service (SaaS) application for banking called Jivaro, which helps to identify when and how to apply different IBM Tivoli security products.