Best Containers books

Container Security

Fundamentals for Securing Containerized Applications

Liz Rice's first-principles introduction to how Linux containers actually work — namespaces, cgroups, capabilities, seccomp, image layering — and the security implications that fall out of those mechanics.

Kubernetes Security

Liz Rice and Michael Hausenblas's freely-available O'Reilly short on the Kubernetes-specific security model: API server, RBAC, network policy, secrets, and the typical hardening steps that move a cluster from default to defensible.

Kubernetes Security and Observability

A Holistic Approach to Securing Containers and Cloud-Native Applications

Brendan Creane and Amit Gupta's combined treatment of Kubernetes security and observability — RBAC, network policy, runtime detection, and the telemetry needed to make any of it operationally real.