An Introduction to Apache Kafka Security: Securing Real-Time Data Streams

Apache Kafka supports critical real-time applications but has limited security enabled by default, making protection of data in transit and at rest essential. A free Confluent Developer course introduces Kafka security planning, emphasizing corporate policies, regulatory obligations, deployment environments, performance trade-offs, encryption, and auditability. It covers authentication through principals for clients, brokers, and ZooKeeper; authorization through ACLs and, for larger organizations, external role or group systems with custom authorizers; and SSL-based encryption configurations for broker and client traffic. The course also addresses securing ZooKeeper metadata with SSL or SASL and restrictive ACLs, as well as using Log4j-based audit logging to investigate attacks, monitor unauthorized activity, assess impact, and meet compliance requirements.

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