The need for encryption, authentication & nauthorization in Kafka

 1. Currently, any client can access your Kafka cluster (authentication)

2. The clients can publish / consume any topic data (authorisation)

3. All the data being sent is fully visible on the network (encryption)

- Someone could intercept data being sent

- Someone could publish bad data / steal data

- Someone could delete topics

- All these reasons push for more security and an authentication mode