Summary

Code access security allows you to restrict what your code can do, restrict which code can call your code, and identify code. In full trust environments where your code and the code that calls you have the unrestricted set of all permissions, code access security is of less significance.

If your code supports partial trust callers , the security risks are that much greater. In partial trust scenarios, code access security enables you to mitigate some of the additional risks and allows you to constrain privileged code.