The "Kubernetes Hardening Guidance" report released by the NSA and CISA outlines the security challenges in Kubernetes environments and provides configuration strategies to mitigate risks. The report is part of a three-part series aimed at understanding Kubernetes' components and threat model, explaining security rules, and offering practical implementation guidance. Kubernetes, an orchestration platform, has revolutionized workload management by automating tasks like scheduling and autoscaling, freeing engineers from routine maintenance. However, despite its advantages, Kubernetes is complex and prone to security incidents due to misconfigurations, making robust security practices essential. The report identifies three main threat categories: supply chain risks, where vulnerabilities in software components can be exploited; malicious actors who can target control plane and worker node components; and insider threats from individuals with privileged access. Understanding these threats is crucial for securing Kubernetes clusters, especially as the platform becomes a staple in cloud computing environments, and further guidance is expected in the series' subsequent parts.