The article explores the vulnerabilities of Kubernetes Secrets, explaining that they are not secure by default because they are stored in ETCD in plain text, which can be accessed by unauthorized users. To enhance their security, the article suggests implementing encryption at rest using Kubernetes' EncryptionConfiguration, which encrypts secret data before it's stored. It also emphasizes the importance of configuring Role-Based Access Control (RBAC) to restrict access to sensitive information and securing the ETCD data store to prevent unauthorized access. The tutorial provides detailed steps on creating user roles and binding them to specific namespaces for controlled access, as well as generating and managing certificates for authentication. Additionally, it highlights the necessity of securing the communication between the API server and ETCD using TLS with valid client certificates. The article encourages readers to secure their Kubernetes environments and suggests using Earthly for building consistent and isolated environments, enhancing the development process.