Container Security
Container Base Image Selection: A Security-First Decision Framework
Your base image choice determines your container security baseline. Most teams pick based on size or familiarity, not security properties.
Jun 12, 20236 min read
Deep dives, practical guides, and incident analyses from engineers who build Safeguard. No fluff, no vendor FUD — just what you need to ship secure software.
Your base image choice determines your container security baseline. Most teams pick based on size or familiarity, not security properties.
Not all container scanners are equal. We compared Trivy, Grype, Snyk Container, and others on accuracy, speed, and coverage.
Root in the container often means root on the host. Rootless mode breaks that assumption. Here is how to run Docker and Podman without root and why it matters more than you think.
Container build tools have direct access to your source code, secrets, and registries. BuildKit and Buildah offer security features that most teams ignore. Here is what to use and why.
Misconfigured Kubernetes RBAC is a common path to supply chain compromise. Here's how to lock down permissions in your clusters.
Alpine Linux is the default choice for minimal containers. Its APK package manager has a different security model than apt or dnf, and the tradeoffs matter.
Docker Desktop's WSL2 backend reshaped container security on Windows. Here is what changed in 2022 and the defects that forced those changes.
Podman is daemonless, rootless by default, and fork-exec instead of client-server. Here is what those architectural differences mean for container security in practice.
Static scanning finds known vulnerabilities. Runtime analysis finds actual exploitation. Using only one gives you half the picture.
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