Autonomous Data Warehouse stores all data in encrypted format in the Oracle Database. Only authenticated users and applications can access the data when they connect to the database.
All connections to Autonomous Data Warehouse use certificate-based authentication and Secure Sockets Layer (SSL). This ensures that there is no unauthorized access to Autonomous Data Warehouse and that communications between the client and server are fully encrypted and cannot be intercepted or altered.
Certificate based authentication uses an encrypted key stored in a wallet on both the client (where the application is running) and the server (where your database service on the Autonomous Data Warehouse is running). The key on the client must match the key on the server to make a connection. A wallet contains a collection of files, including the key and other information needed to connect to your database service in the Autonomous Data Warehouse. For more information on connections to Autonomous Data Warehouse see About Connecting to an Autonomous Data Warehouse Instance.
You do not need to do any manual configuration to encrypt your data and the connections to your database. These are implemented by Autonomous Data Warehouse.
Autonomous Data Warehouse uses strong password complexity rules for all users based on Oracle Cloud security standards. For more information on the password complexity rules see Create Users with Autonomous Data Warehouse.
You can further restrict connections by specifying a network Access Control List (ACL). By specifying a network ACL a specific Autonomous Data Warehouse database only accepts connections from addresses on the ACL and rejects all other client connections. See Use an Access Control List with Autonomous Database for more information.