additional changes

Author: David Curwin

articles/backup/security-overview.md

@@ -9,22 +9,22 @@ ms.date: 03/12/2020
 
 One of the most important steps you can take to protect your data is to have a reliable backup infrastructure. But it's just as important to ensure that your data is backed up in a secure fashion, and that your backups are protected at all times. Azure Backup provides security to your backup environment - both when your data is in transit and at rest. This article lists security capabilities in Azure Backup that help you protect your backup data and meet the security needs of your business.
 
-## Network connectivity not required for Azure VM backup
+## Internet connectivity not required for Azure VM backup
 
-Backup of Azure VMs requires movement of data from your virtual machine's disk to the Recovery Services vault. However, all the required communication and data transfer happens only on the Azure backbone network without needing to access your virtual network. Therefore, backup of Azure VMs placed inside secured networks doesn't require you to allow access to any IPs/FQDNs or any other methods to allow network access.
+Backup of Azure VMs requires movement of data from your virtual machine's disk to the Recovery Services vault. However, all the required communication and data transfer happens only on the Azure backbone network without needing to access your virtual network. Therefore, backup of Azure VMs placed inside secured networks doesn't require you to allow access to any IPs or FQDNs.
 
 ## Separation between guest and Azure storage
 
-With Azure Backup, which includes full IaaS VM backup and SQL and SAP HANA in VM backup, the backup data is stored in Azure storage and the guest has no direct access to backup storage or its contents.  In the case of IaaS VM backup, the backup snapshot creation and storage is done by Azure fabric where the guest has no involvement other than quiescing the workload for application consistent backups.  In the case of SQL and SAP HANA, the backup extension gets temporary access to write to specific blobs.  In this way existing backups can't be tampered with or deleted by the guest, should it be compromised.
+With Azure Backup, which includes virtual machine backup and SQL and SAP HANA in VM backup, the backup data is stored in Azure storage and the guest has no direct access to backup storage or its contents.  With virtual machine backup, the backup snapshot creation and storage is done by Azure fabric where the guest has no involvement other than quiescing the workload for application consistent backups.  With SQL and SAP HANA, the backup extension gets temporary access to write to specific blobs.  In this way, even in a compromised environment, existing backups can't be tampered with or deleted by the guest.
 
 ## Management and control of identity and user access
 
 Azure Backup enables you to manage fine-grained access using [Azure Role-Based Access Control (RBAC)](https://docs.microsoft.com/azure/role-based-access-control/built-in-roles). RBAC allows you to segregate duties within your team and grant only the amount of access to users necessary to do their jobs.
 
 * Azure Backup provides three built-in roles to control backup management operations:
-  * [Backup Contributor](https://docs.microsoft.com/azure/role-based-access-control/built-in-roles#backup-contributor) - to create and manage backups, except deleting Recovery Services vault and giving access to others
-  * [Backup Operator](https://docs.microsoft.com/azure/role-based-access-control/built-in-roles#backup-operator) - everything a contributor does except removing backup and managing backup policies
-  * [Backup Reader](https://docs.microsoft.com/azure/role-based-access-control/built-in-roles#backup-reader) - permissions to view all backup management operations
+  * Backup Contributor - to create and manage backups, except deleting Recovery Services vault and giving access to others
+  * Backup Operator - everything a contributor does except removing backup and managing backup policies
+  * Backup Reader - permissions to view all backup management operations
 
     [Learn more about Role-Based Access control to manage Azure Backup](https://docs.microsoft.com/azure/backup/backup-rbac-rs-vault).
 
@@ -34,27 +34,25 @@ Azure Backup enables you to manage fine-grained access using [Azure Role-Based A
 
 Encryption protects your data and helps you to meet your organizational security and compliance commitments. Within Azure, data in transit between Azure storage and the vault is protected by HTTPS. This data remains on the Azure backbone network.
 
-* Backup data is automatically encrypted using [Microsoft managed keys](https://docs.microsoft.com/azure/backup/backup-azure-security-feature-cloud#encryption-of-backup-data-using-microsoft-managed-keys). You also can encrypt your backup data in the Recovery Services Vault using [your encryption keys](https://docs.microsoft.com/azure/backup/backup-azure-security-feature-cloud#encryption-of-backup-data-using-customer-managed-keys) stored in the Azure Key Vault.
+* Backup data is automatically encrypted using Microsoft-managed keys. You also can encrypt your backed up managed disk VMs in the Recovery Services Vault using [customer managed keys](https://docs.microsoft.com/azure/backup/backup-azure-security-feature-cloud#encryption-of-backup-data-using-customer-managed-keys) stored in the Azure Key Vault. You don't need to take any explicit action to enable this encryption. It applies to all workloads being backed up to your Recovery Services vault.
 
 * Azure Backup supports backup and restore of Azure VMs that have their OS/data disks encrypted with Azure Disk Encryption (ADE). [Learn more about encrypted Azure VMs and Azure Backup](https://docs.microsoft.com/azure/backup/backup-azure-vms-encryption).
 
 ## Protection of backup data from accidental or malicious deletes
 
-Azure Backup provides security features to help protect backup data even after deletion. One such feature is [soft delete](https://docs.microsoft.com/azure/backup/backup-azure-security-feature-cloud#soft-delete). With soft delete, if a malicious actor deletes the backup of a VM (or backup data is accidentally deleted), the backup data is retained for 14 additional days, allowing the recovery of that backup item with no data loss. The additional 14 days retention of backup data in the "soft delete" state doesn't incur any cost to the customer. [Learn more about soft delete](https://docs.microsoft.com/azure/backup/backup-azure-security-feature-cloud#soft-delete).
+Azure Backup provides security features to help protect backup data even after deletion. One such feature is soft delete. With soft delete, if a malicious actor deletes the backup of a VM (or backup data is accidentally deleted), the backup data is retained for 14 additional days, allowing the recovery of that backup item with no data loss. The additional 14 days retention of backup data in the "soft delete" state doesn't incur any cost to the customer. [Learn more about soft delete](https://docs.microsoft.com/azure/backup/backup-azure-security-feature-cloud#soft-delete).
 
 ## Monitoring and alerts of suspicious activity
 
-Azure Backup provides [built-in monitoring and alerting capabilities](https://docs.microsoft.com/azure/backup/backup-azure-monitoring-built-in-monitor) to view and configure actions for events related to Azure Backup. [Backup Reports](https://docs.microsoft.com/azure/backup/configure-reports) serve as a one-stop destination for tracking usage, auditing of backups and restores, and identifying key trends at different levels of granularity. Using Azure Backup's monitoring and reporting tools can alert you to any unauthorized, suspicious, or malicious activity as soon as they occur.g
+Azure Backup provides [built-in monitoring and alerting capabilities](https://docs.microsoft.com/azure/backup/backup-azure-monitoring-built-in-monitor) to view and configure actions for events related to Azure Backup. [Backup Reports](https://docs.microsoft.com/azure/backup/configure-reports) serve as a one-stop destination for tracking usage, auditing of backups and restores, and identifying key trends at different levels of granularity. Using Azure Backup's monitoring and reporting tools can alert you to any unauthorized, suspicious, or malicious activity as soon as they occur.
 
-## Protection of backup process for on-premises resources
+## Security features to help protect hybrid backups
 
 Azure Backup service uses the Microsoft Azure Recovery Services (MARS) agent to back up and restore files, folders, and the volume or system state from an on-premises computer to Azure. MARS now provides security features to help protect hybrid backups. These features include:
 
-* **Prevention**: An additional layer of authentication is added whenever a critical operation like changing a passphrase is performed. This validation is to ensure that such operations can be performed only by users who have valid Azure credentials. [Learn more about the features that prevent attacks](https://docs.microsoft.com/azure/backup/backup-azure-security-feature#prevent-attacks).
+* An additional layer of authentication is added whenever a critical operation like changing a passphrase is performed. This validation is to ensure that such operations can be performed only by users who have valid Azure credentials. [Learn more about the features that prevent attacks](https://docs.microsoft.com/azure/backup/backup-azure-security-feature#prevent-attacks).
 
-* **Alerting**: An email notification is sent to the subscription admin whenever a critical operation like deleting backup data is performed. This email ensures that the user is notified quickly about such actions. [Learn more about notifications for critical operations](https://docs.microsoft.com/azure/backup/backup-azure-security-feature#notifications-for-critical-operations).
-
-* **Recovery**: Deleted backup data is retained for an additional 14 days from the date of deletion. This ensures recoverability of the data within a given time period, so there's no data loss even if an attack happens. Also, a greater number of minimum recovery points are maintained to guard against corrupt data. [Learn more about recovering deleted backup data](https://docs.microsoft.com/azure/backup/backup-azure-security-feature#recover-deleted-backup-data).
+* Deleted backup data is retained for an additional 14 days from the date of deletion. This ensures recoverability of the data within a given time period, so there's no data loss even if an attack happens. Also, a greater number of minimum recovery points are maintained to guard against corrupt data. [Learn more about recovering deleted backup data](https://docs.microsoft.com/azure/backup/backup-azure-security-feature#recover-deleted-backup-data).
 
 ## Compliance with standardized security requirements