Container Security

Container security protects containerized applications throughout their lifecycle, from image building through deployment and runtime.

Container security addresses the unique risks of Docker, Kubernetes, and containerized workloads.

Container security layers: - Image Security: Scan images for vulnerabilities - Registry Security: Control what images are trusted - Orchestration Security: Secure Kubernetes/ECS/etc. - Runtime Security: Monitor running containers - Network Security: Segment container traffic

Key practices: - Use minimal base images - Scan images in CI/CD - Sign and verify images - Run containers as non-root - Limit container capabilities - Implement network policies - Monitor for anomalous behavior

Why It Matters

Containers introduce unique security challenges that traditional security tools miss. Vulnerable base images, excessive container privileges, and lack of runtime monitoring are common attack vectors in containerized environments. As organizations adopt Kubernetes at scale, securing the container lifecycle—from image scanning in CI/CD to runtime anomaly detection—becomes essential for maintaining compliance and preventing breaches.

Key Points

Shift security left to image building

Scan images in CI/CD pipeline

Never run containers as root

Use network policies for segmentation

Runtime monitoring detects compromises

Applicable Compliance Frameworks

SOC 2 ISO 27001 PCI DSS

Related Terms

Cloud Security

Cloud security encompasses the technologies, policies, and controls used to protect data, applications, and infrastructure in cloud computing environments.

Vulnerability Assessment

A vulnerability assessment is an automated process of identifying security weaknesses in systems, networks, and applications without actively exploiting them.

CSPM

Cloud Security Posture Management (CSPM) continuously monitors cloud infrastructure for misconfigurations, compliance violations, and security risks.