Cloud Native Security: Securing Containers and Kubernetes Workloads

Container Security Fundamentals

Containers are not inherently secure. A misconfigured container can provide an attacker with root access to the host node, compromising every workload running on it.

Security Controls

• Image Scanning: Scan all container images for vulnerabilities before they enter your registry using tools like Trivy or Grype.
• Non-Root Containers: Run all containers as non-root users. Set runAsNonRoot: true in pod security contexts.
• Read-Only Filesystems: Mount container filesystems as read-only to prevent runtime tampering.
• Network Policies: Restrict pod-to-pod communication using Kubernetes Network Policies.