Definition
Container security is a set of practices and tools designed to protect containerized applications and their underlying infrastructure from threats. It encompasses securing the container image build process, the runtime environment, and the orchestration platform. This approach ensures that applications deployed in containers remain isolated, resilient, and free from vulnerabilities throughout their lifecycle. For instance, implementing image scanning for known vulnerabilities before deployment is a key container security measure. Unlike traditional server security, container security focuses on ephemeral, immutable infrastructure and the shared kernel model. This topic is frequently assessed on certifications like CompTIA Security+, CySA+, and CISSP.