diff --git a/windows/keep-secure/requirements-and-deployment-planning-guidelines-for-device-guard.md b/windows/keep-secure/requirements-and-deployment-planning-guidelines-for-device-guard.md
index ae5adee427..c00e795566 100644
--- a/windows/keep-secure/requirements-and-deployment-planning-guidelines-for-device-guard.md
+++ b/windows/keep-secure/requirements-and-deployment-planning-guidelines-for-device-guard.md
@@ -42,15 +42,15 @@ You can deploy Device Guard in phases, and plan these phases in relation to the
The following tables provide more information about the hardware, firmware, and software required for deployment of various Device Guard features. The tables describe baseline protections, plus protections for improved security that are associated with hardware and firmware options available in 2015, available in 2016, and announced as options for 2017.
> **Notes**
-> - To understand the requirements in the following tables, you will need to be familiar with the main features in Device Guard: configurable code integrity policies, virtualization-based security (VBS), and Universal Extensible Firmware Interface (UEFI) Secure Boot. For information about these features, see [How Device Guard features help protect against threats](introduction-to-device-guard-virtualization-based-security-and-code-integrity-policies.md#how-device-guard-features-help-protect-against-threats).
-> - Beginning with Windows 10, version 1607, Trusted Platform Module (TPM 2.0) must be enabled by default on new computers.
+> • To understand the requirements in the following tables, you will need to be familiar with the main features in Device Guard: configurable code integrity policies, virtualization-based security (VBS), and Universal Extensible Firmware Interface (UEFI) Secure Boot. For information about these features, see [How Device Guard features help protect against threats](introduction-to-device-guard-virtualization-based-security-and-code-integrity-policies.md#how-device-guard-features-help-protect-against-threats).
+> • Beginning with Windows 10, version 1607, Trusted Platform Module (TPM 2.0) must be enabled by default on new computers.
## Device Guard requirements for baseline protections
|Baseline Protections - requirement | Description |
|---------------------------------------------|----------------------------------------------------|
| Hardware: **64-bit CPU** | A 64-bit computer is required for the Windows hypervisor to provide VBS. |
-| Hardware: **CPU virtualization extensions**,
plus **extended page tables** | **Requirements**: These hardware features are required for VBS:
One of the following virtualization extensions:
- VT-x (Intel) or
- AMD-V
And:
- Extended page tables, also called Second Level Address Translation (SLAT).
**Security benefits**: VBS provides isolation of the secure kernel from the normal operating system. Vulnerabilities and zero-days in the normal operating system cannot be exploited because of this isolation. |
+| Hardware: **CPU virtualization extensions**,
plus **extended page tables** | **Requirements**: These hardware features are required for VBS:
One of the following virtualization extensions:
• VT-x (Intel) or
• AMD-V
And:
• Extended page tables, also called Second Level Address Translation (SLAT).
**Security benefits**: VBS provides isolation of the secure kernel from the normal operating system. Vulnerabilities and zero-days in the normal operating system cannot be exploited because of this isolation. |
| Firmware: **UEFI firmware version 2.3.1.c or higher with UEFI Secure Boot** | **Requirements**: See the following Windows Hardware Compatibility Program requirement: [System.Fundamentals.Firmware.UEFISecureBoot](http://msdn.microsoft.com/library/windows/hardware/dn932805.aspx#system-fundamentals-firmware-uefisecureboot)
**Security benefits**: UEFI Secure Boot helps ensure that the device boots only authorized code. This can prevent boot kits and root kits from installing and persisting across reboots. |
| Firmware: **Secure firmware update process** | **Requirements**: UEFI firmware must support secure firmware update found under the following Windows Hardware Compatibility Program requirement: [System.Fundamentals.Firmware.UEFISecureBoot](http://msdn.microsoft.com/library/windows/hardware/dn932805.aspx#system-fundamentals-firmware-uefisecureboot).
**Security benefits**: UEFI firmware just like software can have security vulnerabilities that, when found, need to be patched through firmware updates. Patching helps prevent root kits from getting installed. |
| Software: **HVCI compatible drivers** | **Requirements**: See the Windows Hardware Compatibility Program requirements under [Filter.Driver.DeviceGuard.DriverCompatibility](https://msdn.microsoft.com/library/windows/hardware/mt589732(v=vs.85).aspx).
**Security benefits**: [HVCI Compatible](https://blogs.msdn.microsoft.com/windows_hardware_certification/2015/05/22/driver-compatibility-with-device-guard-in-windows-10/) drivers help ensure that VBS can maintain appropriate memory permissions. This increases resistance to bypassing vulnerable kernel drivers and helps ensure that malware cannot run in kernel. Only code verified through code integrity can run in kernel mode. |
@@ -66,7 +66,7 @@ The following tables describes additional hardware and firmware requirements, an
| Protections for Improved Security - requirement | Description |
|---------------------------------------------|----------------------------------------------------|
-| Firmware: **Securing Boot Configuration and Management** | **Requirements**:
- BIOS password or stronger authentication must be supported.
- In the BIOS configuration, BIOS authentication must be set.
- There must be support for protected BIOS option to configure list of permitted boot devices (for example, “Boot only from internal hard drive”) and boot device order, overriding BOOTORDER modification made by operating system.
- In the BIOS configuration, BIOS options related to security and boot options (list of permitted boot devices, boot order) must be secured to prevent other operating systems from starting and to prevent changes to the BIOS settings.
**Security benefits**:
- BIOS password or stronger authentication helps ensure that only authenticated Platform BIOS administrators can change BIOS settings. This helps protect against a physically present user with BIOS access.
- Boot order when locked provides protection against the computer being booted into WinRE or another operating system on bootable media. |
+| Firmware: **Securing Boot Configuration and Management** | **Requirements**:
• BIOS password or stronger authentication must be supported.
• In the BIOS configuration, BIOS authentication must be set.
• There must be support for protected BIOS option to configure list of permitted boot devices (for example, “Boot only from internal hard drive”) and boot device order, overriding BOOTORDER modification made by operating system.
• In the BIOS configuration, BIOS options related to security and boot options (list of permitted boot devices, boot order) must be secured to prevent other operating systems from starting and to prevent changes to the BIOS settings.
**Security benefits**:
• BIOS password or stronger authentication helps ensure that only authenticated Platform BIOS administrators can change BIOS settings. This helps protect against a physically present user with BIOS access.
• Boot order when locked provides protection against the computer being booted into WinRE or another operating system on bootable media. |
@@ -76,9 +76,9 @@ The following tables describes additional hardware and firmware requirements, an
| Protections for Improved Security - requirement | Description |
|---------------------------------------------|----------------------------------------------------|
-| Firmware: **Hardware Rooted Trust Platform Secure Boot** | **Requirements**:
Boot Integrity (Platform Secure Boot) must be supported. See the Windows Hardware Compatibility Program requirements under [System.Fundamentals.Firmware.CS.UEFISecureBoot.ConnectedStandby](https://msdn.microsoft.com/library/windows/hardware/dn932807(v=vs.85).aspx#system_fundamentals_firmware_cs_uefisecureboot_connectedstandby)
- The Hardware Security Test Interface (HSTI) 1.1.a must be implemented. See [Hardware Security Testability Specification](https://msdn.microsoft.com/en-us/library/windows/hardware/mt712332(v=vs.85).aspx).
**Security benefits**:
- Boot Integrity (Platform Secure Boot) from Power-On provides protections against physically present attackers, and defense-in-depth against malware.
- HSTI 1.1.a provides additional security assurance for correctly secured silicon and platform. |
+| Firmware: **Hardware Rooted Trust Platform Secure Boot** | **Requirements**:
Boot Integrity (Platform Secure Boot) must be supported. See the Windows Hardware Compatibility Program requirements under [System.Fundamentals.Firmware.CS.UEFISecureBoot.ConnectedStandby](https://msdn.microsoft.com/library/windows/hardware/dn932807(v=vs.85).aspx#system_fundamentals_firmware_cs_uefisecureboot_connectedstandby)
• The Hardware Security Test Interface (HSTI) 1.1.a must be implemented. See [Hardware Security Testability Specification](https://msdn.microsoft.com/en-us/library/windows/hardware/mt712332.aspx).
**Security benefits**:
• Boot Integrity (Platform Secure Boot) from Power-On provides protections against physically present attackers, and defense-in-depth against malware.
• HSTI 1.1.a provides additional security assurance for correctly secured silicon and platform. |
| Firmware: **Firmware Update through Windows Update** | **Requirements**: Firmware must support field updates through Windows Update and UEFI encapsulation update.
**Security benefits**: Helps ensure that firmware updates are fast, secure, and reliable. |
-| Firmware: **Securing Boot Configuration and Management** | **Requirements**:
- Required BIOS capabilities: Ability of OEM to add ISV, OEM, or Enterprise Certificate in Secure Boot DB at manufacturing time.
- Required configurations: Microsoft UEFI CA must be removed from Secure Boot DB. Support for 3rd-party UEFI modules is permitted but should leverage ISV-provided certificates or OEM certificate for the specific UEFI software.
**Security benefits**:
- Enterprises can choose to allow proprietary EFI drivers/applications to run.
- Removing Microsoft UEFI CA from Secure Boot DB provides full control to enterprises over software that runs before the operating system boots. |
+| Firmware: **Securing Boot Configuration and Management** | **Requirements**:
• Required BIOS capabilities: Ability of OEM to add ISV, OEM, or Enterprise Certificate in Secure Boot DB at manufacturing time.
• Required configurations: Microsoft UEFI CA must be removed from Secure Boot DB. Support for 3rd-party UEFI modules is permitted but should leverage ISV-provided certificates or OEM certificate for the specific UEFI software.
**Security benefits**:
• Enterprises can choose to allow proprietary EFI drivers/applications to run.
• Removing Microsoft UEFI CA from Secure Boot DB provides full control to enterprises over software that runs before the operating system boots. |
@@ -88,8 +88,8 @@ The following table lists requirements for Windows 10, version 1703, which are i
| Protection for Improved Security | Description |
|---------------------------------------------|----------------------------------------------------|
-| Firmware: **VBS enablement of NX protection for UEFI runtime services** | **Requirements**:
- VBS will enable No-Execute (NX) protection on UEFI runtime service code and data memory regions. UEFI runtime service code must support read-only page protections, and UEFI runtime service data must not be exceutable.
- UEFI runtime service must meet these requirements:
- Implement UEFI 2.6 EFI_MEMORY_ATTRIBUTES_TABLE. All UEFI runtime service memory (code and data) must be described by this table.
- PE sections need to be page-aligned in memory (not required for in non-volitile storage).
- The Memory Attributes Table needs to correctly mark code and data as RO/NX for configuration by the OS:
- All entries must include attributes EFI_MEMORY_RO, EFI_MEMORY_XP, or both
- No entries may be left with neither of the above attributes, indicating memory that is both exceutable and writable. Memory must be either readable and executable or writeable and non-executable.
Notes:
- This only applies to UEFI runtime service memory, and not UEFI boot service memory.
- This protection is applied by VBS on OS page tables.
Please also note the following:
- Do not use sections that are both writeable and exceutable
- Do not attempt to directly modify executable system memory
- Do not use dynamic code
**Security benefits**:
- Vulnerabilities in UEFI runtime, if any, will be blocked from compromising VBS (such as in functions like UpdateCapsule and SetVariable)
- Reduces the attack surface to VBS from system firmware. |
-| Firmware: **Firmware support for SMM protection** | **Requirements**: The [Windows SMM Security Mitigations Table (WSMT) specification](http://download.microsoft.com/download/1/8/A/18A21244-EB67-4538-BAA2-1A54E0E490B6/WSMT.docx) contains details of an Advanced Configuration and Power Interface (ACPI) table that was created for use with Windows operating systems that support Windows virtualization-based security (VBS) features.
**Security benefits**:
- Protects against potential vulnerabilities in UEFI runtime services, if any, will be blocked from compromising VBS (such as in functions like UpdateCapsule and SetVariable)
- Reduces the attack surface to VBS from system firmware.
- Blocks additional security attacks against SMM. |
+| Firmware: **VBS enablement of NX protection for UEFI runtime services** | **Requirements**:
• VBS will enable No-Execute (NX) protection on UEFI runtime service code and data memory regions. UEFI runtime service code must support read-only page protections, and UEFI runtime service data must not be exceutable.
• UEFI runtime service must meet these requirements:
• Implement UEFI 2.6 EFI_MEMORY_ATTRIBUTES_TABLE. All UEFI runtime service memory (code and data) must be described by this table.
• PE sections need to be page-aligned in memory (not required for in non-volitile storage).
• The Memory Attributes Table needs to correctly mark code and data as RO/NX for configuration by the OS:
• All entries must include attributes EFI_MEMORY_RO, EFI_MEMORY_XP, or both
• No entries may be left with neither of the above attributes, indicating memory that is both exceutable and writable. Memory must be either readable and executable or writeable and non-executable.
Notes:
• This only applies to UEFI runtime service memory, and not UEFI boot service memory.
• This protection is applied by VBS on OS page tables.
Please also note the following:
• Do not use sections that are both writeable and exceutable
• Do not attempt to directly modify executable system memory
• Do not use dynamic code
**Security benefits**:
• Vulnerabilities in UEFI runtime, if any, will be blocked from compromising VBS (such as in functions like UpdateCapsule and SetVariable)
• Reduces the attack surface to VBS from system firmware. |
+| Firmware: **Firmware support for SMM protection** | **Requirements**: The [Windows SMM Security Mitigations Table (WSMT) specification](http://download.microsoft.com/download/1/8/A/18A21244-EB67-4538-BAA2-1A54E0E490B6/WSMT.docx) contains details of an Advanced Configuration and Power Interface (ACPI) table that was created for use with Windows operating systems that support Windows virtualization-based security (VBS) features.
**Security benefits**:
• Protects against potential vulnerabilities in UEFI runtime services, if any, will be blocked from compromising VBS (such as in functions like UpdateCapsule and SetVariable)
• Reduces the attack surface to VBS from system firmware.
• Blocks additional security attacks against SMM. |
## Device Guard deployment in different scenarios: types of devices
@@ -97,9 +97,9 @@ Typically, deployment of Device Guard happens best in phases, rather than being
| **Type of device** | **How Device Guard relates to this type of device** | **Device Guard components that you can use to protect this kind of device** |
|------------------------------------|------------------------------------------------------|--------------------------------------------------------------------------------|
-| **Fixed-workload devices**: Perform same tasks every day.
Lists of approved applications rarely change.
Examples: kiosks, point-of-sale systems, call center computers. | Device Guard can be deployed fully, and deployment and ongoing administration are relatively straightforward.
After Device Guard deployment, only approved applications can run. This is because of protections offered by the Hypervisor Code Integrity (HVCI) service. | - VBS (hardware-based) protections, enabled.
- Code integrity policies in enforced mode, with UMCI enabled. |
-| **Fully managed devices**: Allowed software is restricted by IT department.
Users can request additional software, or install from a list of applications provided by IT department.
Examples: locked-down, company-owned desktops and laptops. | An initial baseline code integrity policy can be established and enforced. Whenever the IT department approves additional applications, it will update the code integrity policy and (for unsigned LOB applications) the catalog.
Code integrity policies are supported by the HVCI service. | - VBS (hardware-based) protections, enabled.
- Code integrity policies in enforced mode, with UMCI enabled. |
-| **Lightly managed devices**: Company-owned, but users are free to install software.
Devices are required to run organization's antivirus solution and client management tools. | Device Guard can be used to help protect the kernel, and to monitor (audit) for problem applications rather than limiting the applications that can be run. | - VBS (hardware-based) protections, enabled. When enabled with a code integrity policy in audit mode only, VBS means the hypervisor helps enforce the default kernel-mode code integrity policy, which protects against unsigned drivers or system files.
- Code integrity policies, with UMCI enabled, but running in audit mode only. This means applications are not blocked—the policy just logs an event whenever an application outside the policy is started. |
+| **Fixed-workload devices**: Perform same tasks every day.
Lists of approved applications rarely change.
Examples: kiosks, point-of-sale systems, call center computers. | Device Guard can be deployed fully, and deployment and ongoing administration are relatively straightforward.
After Device Guard deployment, only approved applications can run. This is because of protections offered by the Hypervisor Code Integrity (HVCI) service. | - VBS (hardware-based) protections, enabled.
• Code integrity policies in enforced mode, with UMCI enabled. |
+| **Fully managed devices**: Allowed software is restricted by IT department.
Users can request additional software, or install from a list of applications provided by IT department.
Examples: locked-down, company-owned desktops and laptops. | An initial baseline code integrity policy can be established and enforced. Whenever the IT department approves additional applications, it will update the code integrity policy and (for unsigned LOB applications) the catalog.
Code integrity policies are supported by the HVCI service. | - VBS (hardware-based) protections, enabled.
• Code integrity policies in enforced mode, with UMCI enabled. |
+| **Lightly managed devices**: Company-owned, but users are free to install software.
Devices are required to run organization's antivirus solution and client management tools. | Device Guard can be used to help protect the kernel, and to monitor (audit) for problem applications rather than limiting the applications that can be run. | - VBS (hardware-based) protections, enabled. When enabled with a code integrity policy in audit mode only, VBS means the hypervisor helps enforce the default kernel-mode code integrity policy, which protects against unsigned drivers or system files.
• Code integrity policies, with UMCI enabled, but running in audit mode only. This means applications are not blocked—the policy just logs an event whenever an application outside the policy is started. |
| **Bring Your Own Device**: Employees are allowed to bring their own devices, and also use those devices away from work. | Device Guard does not apply. Instead, you can explore other hardening and security features with MDM-based conditional access solutions, such as Microsoft Intune. | N/A |
## Device Guard deployment in virtual machines