Chapter 9. Security
One of the advantages of virtualized execution environments such as the CLR is that one can develop new security models that transcend the underlying operating system's security model. To that end, the CLR implements its own secure execution model that is independent of the host platform. Beyond the benefits of bringing security to platforms that have never had it (e.g., Windows 98), this also is an opportunity to impose a more component-centric security model that takes into account the nature of dynamically composed systems. This component-centric model is known as code-access security (CAS), which is the focus of this chapter.
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