Advanced SQL Security

Hello Guys,

This part covers advanced SQL security features including row-level security, dynamic data masking, transparent data encryption (TDE), always encrypted, auditing at both database and row levels. These techniques help protect sensitive data and ensure compliance with security standards and regulations. Stay tuned for more SQL blogs covering additional security measures and best practices!

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-- Row-Level Security
CREATE SECURITY POLICY SalesFilter
ADD FILTER PREDICATE dbo.fn_securitypredicate(EmployeeID) ON Sales,
ADD BLOCK PREDICATE dbo.fn_securitypredicate(EmployeeID) ON Sales;

-- Dynamic Data Masking
ALTER TABLE Employees
ALTER COLUMN Salary ADD MASKED WITH (FUNCTION = 'partial(0, "XXXXXXX", 4)');
-- Transparent Data Encryption (TDE)
CREATE DATABASE ENCRYPTION KEY
WITH ALGORITHM = AES_256
ENCRYPTION BY SERVER CERTIFICATE TDECertificate;

ALTER DATABASE CompanyDB
SET ENCRYPTION ON;
-- Always Encrypted
CREATE COLUMN MASTER KEY TDEKey
WITH (KEY_STORE_PROVIDER_NAME = 'MSSQL_CERTIFICATE_STORE', KEY_PATH = 'CurrentUser/My/AlwaysEncryptedCert');
CREATE COLUMN ENCRYPTION KEY TDEColumnKey
WITH VALUES
( COLUMN_MASTER_KEY = TDEKey,
  ALGORITHM = 'RSA_OAEP',
  ENCRYPTED_VALUE = '...encrypted value...'
);
ALTER TABLE Employees…