The Blob Storage and Queue Storage client libraries uses AES in order to encrypt user data. This policy grants the service identity access to receive the key. Because your data is secured by default, you don't need to modify your code or applications to take advantage of Azure Storage encryption. Ability to encrypt multiple services to one master, Can segregate key management from overall management model for the service, Can define service and key location across regions, Customer has full responsibility for key access management, Customer has full responsibility for key lifecycle management, Additional Setup & configuration overhead, Full control over the root key used encryption keys are managed by a customer provided store, Full responsibility for key storage, security, performance, and availability, Full responsibility for key access management, Full responsibility for key lifecycle management, Significant setup, configuration, and ongoing maintenance costs. Because data is moving back and forth from many locations, we generally recommend that you always use SSL/TLS protocols to exchange data across different locations. Best practice: Secure access from multiple workstations located on-premises to an Azure virtual network. Storing an encryption key in Azure Key Vault ensures secure key access and central management of keys. By using SSH keys for authentication, you eliminate the need for passwords to sign in. More info about Internet Explorer and Microsoft Edge, Azure Synapse Analytics (dedicated SQL pool (formerly SQL DW) only), Azure Resource Providers perform the encryption and decryption operations, Customer controls keys via Azure Key Vault, Customer controls keys on customer-controlled hardware, Customers manage and store keys on-premises (or in other secure stores). The term "data at rest" refers to the data, log files, and backups stored in persistent storage. In either case, when leveraging this encryption model, the Azure Resource Provider receives an encrypted blob of data without the ability to decrypt the data in any way or have access to the encryption keys. To configure TDE through the REST API, you must be connected as the Azure Owner, Contributor, or SQL Security Manager. The process is completely transparent to users. Whenever Azure Customer traffic moves between datacenters-- outside physical boundaries not controlled by Microsoft (or on behalf of Microsoft)-- a data-link layer encryption method using the IEEE 802.1AE MAC Security Standards (also known as MACsec) is applied from point-to-point across the underlying network hardware. Organizations have the option of letting Azure completely manage Encryption at Rest. Best practice: Secure access from an individual workstation located on-premises to an Azure virtual network. TLS provides strong authentication, message privacy, and integrity (enabling detection of message tampering, interception, and forgery), interoperability, algorithm flexibility, and ease of deployment and use. Data encryption models in Microsoft Azure | Microsoft Learn Best practices: Use encryption to help mitigate risks related to unauthorized data access. Client encryption model Key Vault is not intended to be a store for user passwords. Use access controls to revoke access to individual users or services in Azure Key Vault or Managed HSM. The following table shows which client libraries support which versions of client-side encryption and provides guidelines for migrating to client-side encryption v2. Best practices for Azure data security and encryption relate to the following states: Data at rest: This includes all information storage objects, types, and containers that exist statically on physical media. ), No ability to segregate key management from overall management model for the service. You can also use the Storage REST API over HTTPS to interact with Azure Storage. It can traverse firewalls (the tunnel appears as an HTTPS connection). Azure Storage encryption for data at rest Azure Storage uses service-side encryption (SSE) to automatically encrypt your data when it is persisted to the cloud. Microsoft Azure includes tools to safeguard data according to your company's security and compliance needs. The one exception is when you export a database to and from SQL Database. Azure Cosmos DB is Microsoft's globally distributed, multi-model database. Best practice: Move larger data sets over a dedicated high-speed WAN link. 2 For information about creating an account that supports using customer-managed keys with Table storage, see Create an account that supports customer-managed keys for tables. To achieve that goal secure key creation, storage, access control, and management of the encryption keys must be provided. Reviews pros and cons of the different key management protection approaches. Azure SQL Database currently supports encryption at rest for Microsoft-managed service side and client-side encryption scenarios. Organizations have the option of letting Azure completely manage Encryption at Rest. These vaults are backed by HSMs. TDE cannot be used to encrypt system databases, such as the master database, in Azure SQL Database and Azure SQL Managed Instance. IaaS services can enable encryption at rest in their Azure hosted virtual machines and VHDs using Azure Disk Encryption. Customer-managed TDE is also referred to as Bring Your Own Key (BYOK) support for TDE. This article describes best practices for data security and encryption. Server-side encryption using service-managed keys therefore quickly addresses the need to have encryption at rest with low overhead to the customer. Data in a storage account is encrypted regardless of performance tier (standard or premium), access tier (hot or cool), or deployment model (Azure Resource Manager or classic). Update your code to use client-side encryption v2. Microsoft automatically rotates these certificates in compliance with the internal security policy and the root key is protected by a Microsoft internal secret store. A symmetric encryption key is used to encrypt data as it is written to storage. The Resource Provider might use encryption keys that are managed by Microsoft or by the customer depending on the provided configuration. When you use Key Vault, you maintain control. Below you have examples of how they fit on each model: Software as a Service (SaaS) customers typically have encryption at rest enabled or available in each service. Support for server encryption is currently provided through the SQL feature called Transparent Data Encryption. For some services, however, one or more of the encryption models may not be applicable. You can encrypt files that will be at rest either before storing them or by encrypting the entirety of a given storage drive or device. Preview this course. Consider using the service-side encryption features provided by Azure Storage to protect your data, instead of client-side encryption. Best practices for Azure data security and encryption relate to the following data states: Protecting your keys is essential to protecting your data in the cloud. However, configuration is complex, and most Azure services dont support this model. By default, after SMB encryption is turned on for a share or server, only SMB 3.0 clients are allowed to access the encrypted shares. Detail: Use Azure RBAC predefined roles. Server-side: All Azure Storage Services enable server-side encryption by default using service-managed keys, which is transparent to the application. Encryption at rest is implemented by using a number of security technologies, including secure key storage systems, encrypted networks, and cryptographic APIs. No customer control over the encryption keys (key specification, lifecycle, revocation, etc. The Azure services that support each encryption model: * This service doesn't persist data. For more information, see Client-side encryption for blobs and queues. As described previously, the goal of encryption at rest is that data that is persisted on disk is encrypted with a secret encryption key. Security Control: Encrypt data in transit - Microsoft Community Hub Because the vast majority of attacks target the end user, the endpoint becomes one of the primary points of attack. Azure Storage encryption protects your data and to help you to meet your organizational security and compliance commitments. With Azure SQL Database, you can apply symmetric encryption to a column of data by using Transact-SQL. As a result, this model is not appropriate for most organizations unless they have specific key management requirements. When Server-side encryption with service-managed keys is used, the key creation, storage, and service access are all managed by the service. Enable platform encryption services. azure-docs/workspaces-encryption.md at main - Github Like PaaS, IaaS solutions can leverage other Azure services that store data encrypted at rest. TDE must be manually enabled for Azure Synapse Analytics. Azure secures your data using various encryption methods, protocols, and algorithms, including double encryption. 25 Apr 2023 08:00:29 This model forms a key hierarchy which is better able to address performance and security requirements: Resource providers and application instances store the encrypted Data Encryption Keys as metadata. Encryption at rest is a mandatory measure required for compliance with some of those regulations. Using SQL Server Management Studio, SQL users choose what key they'd like to use to encrypt which column. Encryption at rest is designed to prevent the attacker from accessing the unencrypted data by ensuring the data is encrypted when on disk. That token can then be presented to Key Vault to obtain a key it has been given access to. Using client-side encryption with Table Storage is not recommended. Customers can verify SQL Database and SQL Managed Instance compliance with internal security policies in independent third-party audit reports available on the Microsoft Trust Center. Key management is done by the customer. Security | NetApp Documentation If a database is in a geo-replication relationship, both the primary and geo-secondary databases are protected by the primary database's parent server key. This characteristic is called Host Your Own Key (HYOK). When sending encrypted traffic between an Azure virtual network and an on-premises location over the public internet, use Azure VPN Gateway. Be sure to protect the BACPAC files appropriately and enable TDE after import of the new database is finished. The configuration steps are different from using an asymmetric key in SQL Database and SQL Managed Instance. Azure Storage encryption is similar to BitLocker encryption on Windows. Optionally, you can choose to add a second layer of encryption with keys you manage using the customer-managed keys or CMK feature. Microsoft recommends using service-side encryption to protect your data for most scenarios. However, this model might not be sufficient for organizations that have requirements to control the creation or lifecycle of the encryption keys or to have different personnel manage a service's encryption keys than those managing the service (that is, segregation of key management from the overall management model for the service). You can use Azure Key Vault to maintain control of keys that access and encrypt your data. Key Vault relieves organizations of the need to configure, patch, and maintain hardware security modules (HSMs) and key management software. When you interact with Azure Storage through the Azure portal, all transactions take place over HTTPS. Encryption at rest is designed to prevent the attacker from accessing the unencrypted data by ensuring the data is encrypted when on disk. By using Key Vault, you can encrypt keys and secrets by using keys that are protected by . In the wrong hands, your application's security or the security of your data can be compromised. This technology is integrated with other Microsoft cloud services and applications, such as Microsoft 365 and Azure Active Directory. DEK is protected by the TDE protector. Security Control: Enable encryption at rest - Microsoft Community Hub All object metadata is also encrypted.
