Example

using System;
using System.Security;
using System.Security.Permissions;

[assembly: PermissionSetAttribute(
             SecurityAction.RequestRefuse,
             Name="SkipVerification")]

namespace Samples
{
  public class VerificationExceptionSample
  {
    unsafe public static void Main(string[] args)
    {
      string s = "damien";
      fixed(char *ptr = s)
      {
        for(int i = 0; i < s.Length; i++)
          Console.WriteLine(ptr[i]);
      }
    }
  }
}
The output is
UnhandledException: System.Security.VerificationException: Operation could 
destabilize the runtime.
   at Samples.VerificationExceptionSample.Main(String[] args) in C:\Books\BCL\
Samples\System.Security\VerificationException\VerificationException.cs:line 15

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