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Container and Kubernetes Security Questions

Security for containerized applications and Kubernetes platforms across the full lifecycle: secure image creation and supply chain, image scanning and vulnerability management, secure base images, image signing, runtime protection and intrusion detection, container isolation and least privilege at the container level, secrets management, pod security policies and admission controllers, network policies and microsegmentation, role based access control for cluster access, cluster hardening and configuration management, secure cluster bootstrapping and upgrades, and compliance considerations and audit logging for container environments. Candidates should be able to discuss tooling, threat models specific to cloud native workloads, and operational practices for preventing and responding to container and orchestration security incidents.

HardSystem Design
0 practiced
Design a highly available and performant admission webhook service that validates image signatures and SBOMs for every pod creation. Address scaling (concurrency, caching), resilience (timeouts, circuit breakers), data sources (signature transparency logs), and how to avoid introducing a single point of failure in the API server flow.
HardSystem Design
0 practiced
Architect a secure Kubernetes platform that spans multiple regions and supports 100 clusters and 5,000 nodes. Describe how you would secure the image supply chain, node hardening, RBAC, network segmentation, secrets management, and compliance/audit trails at that scale.
HardTechnical
0 practiced
Build a threat model for supply chain attacks that target base images and container registries. Identify attacker capabilities, likely attack vectors, high-value assets, and short and long-term mitigations SRE teams should prioritize.
MediumSystem Design
0 practiced
Design a CI/CD pipeline step that enforces image scanning and image signing before an image is pushed to the production registry. Include tools, failure criteria, where SBoMs and signatures are stored, and how to handle legacy images without SBOMs.
EasyTechnical
0 practiced
Define 'least privilege' specifically for containers and Kubernetes workloads. Provide three concrete, actionable steps an SRE can take to move an existing workload toward least privilege without requiring a major refactor.

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