Encryption: All communications sent between the Kafka broker and its many clients are encrypted. This prevents data from being intercepted by other clients. All messages are shared in an encrypted format between the components.

Authentication: Before being able to connect to Kafka, apps that use the Kafka broker must be authenticated. Only approved applications will be able to send or receive messages. To identify themselves, authorized applications will have unique ids and passwords.

After authentication, authorization is carried out. It is possible for a client to publish or consume messages once it has been validated. The permission ensures that write access to apps can be restricted to prevent data contamination.