Visual C++ .NET/Security/SecurityManager

Iterate backwards removing all instances of "ReadOnly Secure Group"

 
#include "stdafx.h"
using namespace System;
using namespace System::Security;
using namespace System::Security::Permissions;
using namespace System::Security::Policy;
void main()
{
    CodeGroup^ machine;
    System::Collections::IEnumerator^ ph = SecurityManager::PolicyHierarchy();
    for (int i = machine->Children->Count - 1; i >= 0; i--)
    {
        if(((CodeGroup^)machine->Children[i])->Name == "ReadOnly Secure Group")
        {
            machine->RemoveChild(((CodeGroup^)machine->Children[i]));
        }
    }
    SecurityManager::SavePolicy();
}

Iterate through policy hierarchy to get Machine Code group

 
#include "stdafx.h"
using namespace System;
using namespace System::Security;
using namespace System::Security::Permissions;
using namespace System::Security::Policy;
void main()
{
    CodeGroup^ machine;
    System::Collections::IEnumerator^ ph = SecurityManager::PolicyHierarchy();
    while( ph->MoveNext() ) 
    {
        PolicyLevel^ machinePolicyLevel = (PolicyLevel^)ph->Current;
        if (machinePolicyLevel->Label == "Machine") 
        {
            machine = machinePolicyLevel->RootCodeGroup;
            break;
        }
    }
    SecurityManager::SavePolicy();
}