Ensure All API Based Integrations Use OAuth Authentication

How it is checked

Audit method: Manual review

This recommendation cannot be checked automatically. A scan lists it with these instructions when you pass --include-manual.

1. Review all configured SOAP and REST integrations in Fusion Applications and Oracle Integration Cloud. 2. Confirm that integration clients are registered as OAuth clients in the Fusion Identity Domain and that Basic Authentication credentials are not in use. 3. Examine Fusion audit logs to identify API requests authenticated with Basic Authentication. 4. Review OCI IAM Identity Domain authentication logs to confirm that API access tokens are issued via OAuth flows only. 5. Validate that no unscoped or legacy credentials are present in active integrations.

How it is fixed

Fix method: Guidance or infrastructure patch

1. Identify integrations currently using Basic Authentication by reviewing Fusion audit logs and OCI IAM authentication records. 2. Register OAuth clients in the Fusion Identity Domain for each integration, assigning only the required scopes and authorized resources. 3. Reconfigure integrations to use OAuth tokens in place of Basic Authentication credentials. 4. Disable or revoke Basic Authentication credentials in Fusion Applications and IAM domains. 5. Establish a recurring process to review Fusion and IAM logs to detect any attempted Basic Authentication use.