I have this book, but haven't had the time to actually read it Tongue Out

If you're looking for security related best practices for .NET related technologies, I find the Patterns & Practices publications really helpful. Most, if not all, of these books are free to download from the web. You can find the entire set here:

http://www.microsoft.com/resources/practices/default.mspx

If you go to the Viewpoints on the left side, you'll notice that each section has it's own Security sub-section.

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