Container security protects containerized applications from build to runtime by securing images, configurations, orchestration platforms, and workloads. Modern container environments — especially Kubernetes and Docker — share the host kernel, making isolation, least privilege, and runtime monitoring critical. Effective container security treats images as artifacts requiring provenance verification, scans dependencies continuously, enforces policy at admission, and detects threats during execution. Security teams must understand that containers are not security boundaries by default — proper configuration transforms them into hardened, minimal-privilege execution units.

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