what does this security warning mean (.Net Process class)?

Question

I am using VSTS 2008 + .Net 2.0 + C#. And I am running Code Analysis after build. I got the following confusing security warning. Here is the warning and related code, any i

Answer 1

Your method calls Foo that calls into a Process.Start which is protected by a link demand for Full Trust. In order to avoid the problem that FxCop is warning you about, you should add a link demand or full demand for the same permissions to your method.

You can fix it by adding to your method

[PermissionSetAttribute(SecurityAction.LinkDemand, Name="FullTrust")]

See http://msdn.microsoft.com/en-us/library/970x52db.aspx