Azure SQL Managed Instance must implement cryptographic mechanisms preventing the unauthorized disclosure of organization-defined information at rest on organization-defined information system components.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-276238	SRG-APP-000429-DB-000387	MSQL-00-003400	SV-276238r1150056_rule	2025-10-07	1

Description
Azure SQL Managed Instance handling data requiring data-at-rest protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest. Selection of a cryptographic mechanism is based on the need to protect the integrity of organizational information. The strength of the mechanism is commensurate with the security category and/or classification of the information.

Description

Azure SQL Managed Instance handling data requiring data-at-rest protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest. Selection of a cryptographic mechanism is based on the need to protect the integrity of organizational information. The strength of the mechanism is commensurate with the security category and/or classification of the information.

ℹ️ Check
Review the system documentation to determine whether the organization has defined the information at rest that is to be protected from modification, which must include, at a minimum, PII and classified information. If no information is identified as requiring such protection, this is not a finding. Review the configuration of the Azure SQL Managed Instance to ensure data-at-rest protections are implemented. If any of the information defined as requiring cryptographic protection from modification is not encrypted in a manner that provides the required level of protection, this is a finding. Use the query below to check the encryption status for each database. If any databases have an is_encrypted status of "0", this is a finding. SELECT [name] AS DatabaseName,is_encrypted FROM master.sys.databases WHERE database_id > 4;

ℹ️ Check

Review the system documentation to determine whether the organization has defined the information at rest that is to be protected from modification, which must include, at a minimum, PII and classified information. If no information is identified as requiring such protection, this is not a finding. Review the configuration of the Azure SQL Managed Instance to ensure data-at-rest protections are implemented. If any of the information defined as requiring cryptographic protection from modification is not encrypted in a manner that provides the required level of protection, this is a finding. Use the query below to check the encryption status for each database. If any databases have an is_encrypted status of "0", this is a finding. SELECT [name] AS DatabaseName,is_encrypted FROM master.sys.databases WHERE database_id > 4;

✔️ Fix
For any database with an is_encrypted status of "0", use the query below to enable transparent data encryption: ALTER DATABASE [Database Name Here] SET ENCRYPTION ON;