The initial deny-all, audit policy I used to build a driver whitelist

Deny_All_Drivers_Audit_Mode.xml

<?xml version="1.0" encoding="utf-8"?>
<SiPolicy xmlns="urn:schemas-microsoft-com:sipolicy">
  <VersionEx>10.0.0.0</VersionEx>
  <PolicyTypeID>{A244370E-44C9-4C06-B551-F6016E563076}</PolicyTypeID>
  <PlatformID>{2E07F7E4-194C-4D20-B7C9-6F44A6C5A234}</PlatformID>
  <Rules>
    <Rule>
      <Option>Enabled:Unsigned System Integrity Policy</Option>
    </Rule>
    <Rule>
      <Option>Enabled:Audit Mode</Option>
    </Rule>
    <Rule>
      <Option>Enabled:Advanced Boot Options Menu</Option>
    </Rule>
    <Rule>
      <Option>Required:Enforce Store Applications</Option>
    </Rule>
    <Rule>
      <Option>Required:WHQL</Option>
    </Rule>
    <Rule>
      <Option>Enabled:Update Policy No Reboot</Option>
    </Rule>
    <Rule>
      <Option>Required:EV Signers</Option>
    </Rule>
    <Rule>
      <Option>Enabled:Boot Audit On Failure</Option>
    </Rule>
  </Rules>
  <!--EKUS-->
  <EKUs />
  <!--File Rules-->
  <FileRules />
  <!--Signers-->
  <Signers />
  <!--Driver Signing Scenarios-->
  <SigningScenarios>
    <SigningScenario Value="131" ID="ID_SIGNINGSCENARIO_DRIVERS_1" FriendlyName="Auto generated policy on 11-18-2017">
      <ProductSigners />
    </SigningScenario>
    <SigningScenario Value="12" ID="ID_SIGNINGSCENARIO_WINDOWS" FriendlyName="Auto generated policy on 11-18-2017">
      <ProductSigners />
    </SigningScenario>
  </SigningScenarios>
  <UpdatePolicySigners />
  <CiSigners />
  <HvciOptions>0</HvciOptions>
</SiPolicy>