Container security is a holistic approach to managing risks in containerized environments, requiring a combination of tools and policies to address security challenges throughout the software supply chain, infrastructure, and runtime environments. Containers, while inherently offering some security benefits due to their isolation and virtualization, also introduce new attack surfaces, such as image vulnerabilities, runtime threats, network vulnerabilities, and risks associated with orchestration tools like Kubernetes. The DevSecOps approach, emphasizing a shift-left philosophy, prioritizes security early in development cycles to mitigate these risks. Best practices for securing containers include securing image creation, implementing strong access controls, maintaining configuration management, and regularly updating and patching all elements of the container ecosystem. Integrating continuous integration and continuous delivery (CI/CD) pipelines can automate many security processes, such as image scanning and configuration validation, providing an early warning system for vulnerabilities and ensuring security without compromising development speed. Various tools, such as Clair, Trivy, Falco, and Sysdig, assist in scanning for vulnerabilities and monitoring container behavior, while orchestration security tools like Kube-bench and Kube-hunter help address security weaknesses in Kubernetes deployments.