Best online reading to understand .NET Code Access Security?

Question

I'm thinking about learning CAS, but I need to quickly grasp basic architecture, performance implications and if it at all suits my needs. What should I read?

Answer 1

MSDN itself provides the info here.

You also can refer to patterns and practices advocated by Microsoft.

Answer 2

There is one very important thing to remember with CAS: a lot of code (too much code) runs at full trust. And with full trust, most of CAS is silently ignored.

Answer 3

Keith Brown's book is insanely good, and it's online. I suggest buying a copy as well. IMO it's a must-read for every .NET developer :

The .NET Developer's Guide to Windows Security