NorthPine Bank, a fictitious yet representative financial institution, recognized the necessity to modernize its data infrastructure to safeguard sensitive customer information against emerging threats. The bank decided to migrate its operations to SQL Server 2022, leveraging its advanced security features to enhance data protection, ensure regulatory compliance, and maintain operational efficiency. This blog explores the specific security challenges faced by NorthPine Bank and details how SQL Server 2022 addresses these issues through its robust, built-in features.<\/p>\n
NorthPine Bank handles a vast amount of sensitive customer data, including:<\/p>\n
The potential loss or theft of this data could result in significant financial loss, legal penalties, and damage to the bank’s reputation. Encrypting data at rest is crucial to ensure that even if physical storage media are compromised, the data remains unreadable to unauthorized parties. NorthPine needed a solution that provided strong encryption without impacting system performance or requiring changes to existing applications.<\/p>\n
Transparent Data Encryption (TDE)<\/strong> in SQL Server 2022 encrypts database files at the page level. TDE encrypts the data and log files on disk and decrypts them in memory during read operations. This process is transparent to applications, meaning no changes are required in application code.<\/p>\n To implement TDE, NorthPine Bank followed these steps:<\/p>\n Create a Master Key and Certificate in the Master Database<\/strong><\/p>\n The master key is used to encrypt the certificate, which in turn secures the database encryption key.<\/p>\n Create a Database Encryption Key and Enable Encryption on the User Database<\/strong><\/p>\n The database encryption key is used to encrypt the database.<\/p>\n Back Up the Certificate and Private Key<\/strong><\/p>\n Backing up the certificate and private key is essential for restoring the database or in disaster recovery scenarios.<\/p>\n With multiple teams and personnel accessing the database, controlling who can view sensitive data is critical. Even privileged users like database administrators should not have access to plaintext sensitive data to prevent insider threats. NorthPine needed a solution that ensures data remains encrypted throughout its lifecycle, including during query processing.<\/p>\n Always Encrypted<\/strong> is a feature that protects sensitive data by allowing clients to encrypt data inside client applications and never revealing the encryption keys to the database engine. Secure enclaves<\/strong> in SQL Server 2022 enhance this feature by enabling rich computations on encrypted data within a secure, isolated part of the server’s memory.<\/p>\n Set Up Column Master Key (CMK) and Column Encryption Key (CEK)<\/strong><\/p>\n The CMK is stored in a trusted key store (e.g., Windows Certificate Store), and the CEK is used to encrypt column data.<\/p>\n Encrypt Sensitive Columns<\/strong><\/p>\n For example, encrypting the Configure Client Applications<\/strong><\/p>\n Applications accessing the encrypted columns need to use an updated version of the client drivers (e.g., ADO.NET) that support Always Encrypted and secure enclaves. Additionally, the application connection string should have the NorthPine Bank must comply with regulations such as GDPR, PCI DSS, and SOX, which require strict data governance, access controls, and auditing capabilities. They needed tools to automate the identification of sensitive data, enforce security policies, and provide comprehensive audit trails.<\/p>\n DDC helps discover, classify, label, and protect sensitive data within the database.<\/p>\n SQL Server Audit provides a powerful auditing capability that enables tracking and logging of events at the server and database levels.<\/p>\n Implement Dynamic Data Classification<\/strong><\/p>\n NorthPine used DDC to classify sensitive columns:<\/p>\n Alternatively, this can be managed through SQL Server Management Studio’s Data Discovery & Classification feature.<\/p>\n<\/li>\n Set Up SQL Server Audit<\/strong><\/p>\n Monitor and Report<\/strong><\/p>\n Regularly review audit logs and use built-in reports or SQL queries to analyze audit data.<\/p>\n<\/li>\n<\/ol>\n Acknowledging that no system is entirely immune to attacks, NorthPine Bank sought to minimize the impact of potential data breaches. Early detection of anomalous activities and limiting exposure of sensitive data were essential components of their security strategy.<\/p>\n ATP provides:<\/p>\n DDM limits sensitive data exposure by masking it to non-privileged users.<\/p>\n Enable Advanced Threat Protection<\/strong><\/p>\n ATP is configured through the Azure portal for Azure SQL Databases. For on-premises SQL Server instances, NorthPine can integrate with Microsoft Defender for SQL to enable similar threat detection capabilities.<\/p>\n<\/li> Implement Dynamic Data Masking<\/strong><\/p>\n For example, masking the Define User Roles and Permissions<\/strong><\/p>\n Assign users to roles based on their need to access sensitive data. Grant the Adopting a hybrid cloud model introduced complexity in maintaining consistent security policies across on-premises and cloud environments. NorthPine needed a unified approach to manage security for databases in both environments.<\/p>\n Connect On-Premises SQL Servers to Azure Arc<\/strong><\/p>\n Install the Azure Arc-enabled SQL Server agent on the on-premises servers and register SQL Server instances with Azure Arc to manage them through Azure.<\/p>\n<\/li>\n Enable Azure Defender for SQL<\/strong><\/p>\n Activate Azure Defender for SQL for both on-premises and cloud instances via the Azure portal. This provides advanced security features such as threat protection and vulnerability assessments across all environments.<\/p>\n<\/li>\n Manage Security Policies<\/strong><\/p>\n Use Azure Policy to define and enforce security configurations across all SQL Server instances. Monitor compliance and remediate issues using Azure Security Center (now part of Microsoft Defender for Cloud).<\/p>\n<\/li>\n<\/ol>\n By leveraging the advanced security features of SQL Server 2022, NorthPine Bank established a robust data protection strategy that addresses the multifaceted challenges of modern financial operations. The implementation of Transparent Data Encryption, Always Encrypted with secure enclaves, advanced auditing, threat protection, and unified security management provided a comprehensive defense-in-depth approach.<\/p>\n Key Outcomes for NorthPine Bank:<\/strong><\/p>\n As the financial industry continues to evolve, SQL Server 2022 equips institutions like NorthPine Bank with the necessary tools to protect their data assets, maintain customer trust, and adapt to future security challenges.<\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" NorthPine Bank, a fictitious yet representative financial institution, recognized the necessity to modernize its data infrastructure to safeguard sensitive customer information against emerging threats. The bank decided to migrate its operations to SQL Server 2022, leveraging its advanced security features to enhance data protection, ensure regulatory compliance, and maintain operational efficiency. This blog explores the specific security challenges faced by NorthPine Bank and details how SQL Server 2022 addresses these issues through its robust, built-in features.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[35,120,29,144,40],"tags":[302,299,301,292,296,297,303,300,119,298],"class_list":["post-787","post","type-post","status-publish","format-standard","hentry","category-data-integrity","category-encryption","category-security","category-sql-auditing","category-sql-server-2022","tag-advanced-threat-protection","tag-always-encrypted","tag-data-auditing","tag-data-security","tag-database-encryption","tag-financial-data-protection","tag-hybrid-cloud-security","tag-regulatory-compliance","tag-sql-server-2022","tag-transparent-data-encryption-tde"],"yoast_head":"\nKey Features of TDE<\/h4>\n
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Implementation at NorthPine Bank<\/h4>\n
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-- Create a master key in the master database\nUSE master;\nGO\nCREATE MASTER KEY ENCRYPTION BY PASSWORD = 'YourKeyPassword';\nGO\n\n-- Create a certificate protected by the master key\nCREATE CERTIFICATE TDECert WITH SUBJECT = 'TDE Certificate for NorthPine Bank';\nGO<\/code><\/pre>\n<\/li>\n-- Switch to the user database\nUSE NorthPineDB;\nGO\n\n-- Create the database encryption key\nCREATE DATABASE ENCRYPTION KEY\nWITH ALGORITHM = AES_256\nENCRYPTION BY SERVER CERTIFICATE TDECert;\nGO\n\n-- Enable Transparent Data Encryption on the database\nALTER DATABASE NorthPineDB SET ENCRYPTION ON;\nGO<\/code><\/pre>\n<\/li>\n-- Back up the certificate and private key\nUSE master;\nGO\nBACKUP CERTIFICATE TDECert\n TO FILE = 'C:\\Backup\\TDECert.cer'\n WITH PRIVATE KEY (\n FILE = 'C:\\Backup\\TDECert_PrivateKey.pvk',\n ENCRYPTION BY PASSWORD = 'YourKeyPassword!'\n );\nGO<\/code><\/pre>\n<\/li>\n<\/ol>\nBenefits Achieved<\/h4>\n
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Preventing Unauthorized Access to Sensitive Data<\/h2>\n
The Challenge<\/h3>\n
How SQL Server 2022 Helps: Always Encrypted with Secure Enclaves<\/h3>\n
Key Features<\/h4>\n
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Implementation at NorthPine Bank<\/h4>\n
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-- Create Column Master Key Metadata\nCREATE COLUMN MASTER KEY MyCMK\nWITH (\n KEY_STORE_PROVIDER_NAME = 'MSSQL_CERTIFICATE_STORE',\n KEY_PATH = 'CurrentUser\/My\/YourCMKCertificateThumbprint'\n);\nGO\n\n-- Create Column Encryption Key\nCREATE COLUMN ENCRYPTION KEY MyCEK\nWITH VALUES (\n COLUMN_MASTER_KEY = MyCMK,\n ALGORITHM = 'RSA_OAEP',\n ENCRYPTED_VALUE = 0x... -- Encrypted CEK value obtained from encryption process\n);\nGO<\/code><\/pre>\n<\/li>\nSSN<\/code> column in the Customers<\/code> table:<\/p>\n-- Alter the column to be encrypted\nALTER TABLE Customers\nALTER COLUMN SSN NVARCHAR(11) COLLATE Latin1_General_BIN2\nENCRYPTED WITH (\n COLUMN_ENCRYPTION_KEY = MyCEK,\n ENCRYPTION_TYPE = Deterministic,\n ALGORITHM = 'AEAD_AES_256_CBC_HMAC_SHA_256'\n) NULL; -- Include NULL if the column allows NULL values\nGO<\/code><\/pre>\n<\/li>\nColumn Encryption Setting=Enabled<\/code> parameter.<\/p>\n<\/li>\n<\/ol>\nBenefits Achieved<\/h4>\n
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Maintaining Regulatory Compliance<\/h2>\n
The Challenge<\/h3>\n
How SQL Server 2022 Helps: Advanced Auditing and Data Classification<\/h3>\n
Dynamic Data Classification (DDC)<\/h4>\n
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SQL Server Audit<\/h4>\n
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Implementation at NorthPine Bank<\/h4>\n
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-- Add sensitivity classification to a column\nADD SENSITIVITY CLASSIFICATION TO\n [dbo].[Customers].[CreditCardNumber]\nWITH (LABEL = 'Highly Confidential', INFORMATION_TYPE = 'Financial');\nGO<\/code><\/pre>\n
\n-- Create a server audit\nUSE master;\nGO\nCREATE SERVER AUDIT ComplianceServerAudit\nTO FILE (FILEPATH = 'C:\\AuditLogs\\', MAXSIZE = 100 MB);\nGO\n\n-- Enable the server audit\nALTER SERVER AUDIT ComplianceServerAudit WITH (STATE = ON);\nGO\n\n-- Create a database audit specification\nUSE NorthPineDB;\nGO\nCREATE DATABASE AUDIT SPECIFICATION ComplianceDBAuditSpec\nFOR SERVER AUDIT ComplianceServerAudit\nADD (SELECT ON SCHEMA::dbo BY PUBLIC),\nADD (UPDATE ON SCHEMA::dbo BY PUBLIC),\nADD (INSERT ON SCHEMA::dbo BY PUBLIC),\nADD (DELETE ON SCHEMA::dbo BY PUBLIC);\nGO\n\n-- Enable the database audit specification\nALTER DATABASE AUDIT SPECIFICATION ComplianceDBAuditSpec WITH (STATE = ON);\nGO<\/code><\/pre>\n<\/li>\nBenefits Achieved<\/h4>\n
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Protecting Against Data Breaches<\/h2>\n
The Challenge<\/h3>\n
How SQL Server 2022 Helps: Advanced Threat Protection and Dynamic Data Masking<\/h3>\n
Advanced Threat Protection (ATP)<\/h4>\n
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Dynamic Data Masking (DDM)<\/h4>\n
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Implementation at NorthPine Bank<\/h4>\n
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\nSSN<\/code> and Email<\/code> columns:<\/p>\n-- Mask SSN to show only last four digits\nALTER TABLE Customers\nALTER COLUMN SSN ADD MASKED WITH (FUNCTION = 'partial(0,\"XXX-XX-\",4)');\nGO\n\n-- Mask Email to show only the first character and domain\nALTER TABLE Customers\nALTER COLUMN Email ADD MASKED WITH (FUNCTION = 'email()');\nGO<\/code><\/pre>\n<\/li>\nUNMASK<\/code> permission to roles that require access to unmasked data.<\/p>\n-- Grant UNMASK permission to a specific user\nGRANT UNMASK TO [AuthorizedUser];\nGO<\/code><\/pre>\n<\/li>\n<\/ol>\nBenefits Achieved<\/h4>\n
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Protecting Data in the Cloud and On-Premises<\/h2>\n
The Challenge<\/h3>\n
How SQL Server 2022 Helps: Unified Security Management<\/h3>\n
Integration with Azure Defender for SQL<\/h4>\n
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Implementation at NorthPine Bank<\/h4>\n
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\nBenefits Achieved<\/h4>\n
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Conclusion: A Secure Foundation with SQL Server 2022<\/h2>\n
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Microsoft Documentation References<\/h2>\n
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