Kubernetes is a powerful platform for container orchestration but lacks built-in runtime security measures. To enhance the security of your Kubernetes clusters, consider implementing network policies, role-based access control (RBAC), policy admission control, secrets management, audit logs, and ephemeral containers. Network policies allow you to fine-tune network behavior around containers, while RBAC helps manage permissions at the pod or cluster level. Admission controllers enforce rules that address specific attack vectors, and secrets management tools like Vault and CyberArk can store sensitive information securely. Audit logs provide a way to analyze threats using auditing tools like Falco, and ephemeral debug containers help with troubleshooting without compromising security. By incorporating these strategies into your Kubernetes deployments, you can significantly reduce the risk of security breaches and unauthorized access.