Structure of the .NET Framework Security System
Now that we've covered the basics of security responsibilities, let's see what the .NET Framework provides in the way of support.
Figure 23.1 shows how the runtime acts as a layer between the client code and the operating system, adding (from the perspective of security) the concept of code-identity–based security checking.
Figure 23.1. NET Framework layering from the security perspective.
Notice that the lowest, most fundamental level is the operating system itself. This is not just a case of the .NET Framework utilizing general operating system services as part of its implementation (though it certainly ...