Container Security
In-depth guides and analysis on container security from the Safeguard engineering team.
284 articles
Container Escape Techniques in 2023: What's Changed and What Hasn't
Container escapes remain a real threat in multi-tenant environments. A look at the latest techniques, CVEs, and defenses as container security matures in 2023.
Fargate/ECS Container Supply Chain Pitfalls
The parts of container supply chain that break differently on AWS Fargate and ECS compared to Kubernetes, and what to do about each one in production.
Trivy vs Grype: Container Scanning Head-to-Head
Compare Trivy and Grype on vulnerability database sources, scan speed, OS coverage, SBOM integration, and CI ergonomics to pick the right open source container scanner.
Scratch vs Distroless: Choosing the Right Minimal Container Image
Both scratch and distroless promise minimal attack surface. The right choice depends on your runtime, your debugging needs, and your tolerance for complexity.
Container Runtime Showdown: runc vs crun vs gVisor in 2026
A practical comparison of runc, crun, and gVisor across performance, isolation, and operational fit, with concrete guidance on when each runtime earns its place in production.
Firecracker vs Cloud Hypervisor vs Kata Containers: 2026 Buyer Guide
A practical comparison of Firecracker, Cloud Hypervisor, and Kata Containers across boot time, memory overhead, security boundary, and operational fit for serverless and multi-tenant workloads.
OCI + CNCF Image Supply Chain: 2026 Snapshot
Where the OCI and CNCF image supply chain ecosystem actually sits in 2026, what has stabilized, what is still contested, and what to deploy now versus later.
Kubernetes 1.27 Security Highlights
Kubernetes 1.27 graduated seccomp default, introduced in-place pod resize, and cleaned up admission. Here is what actually matters for cluster security.
What is a Golden Image
A golden image is the hardened template every server and container is cloned from — powerful for consistency, dangerous when it goes stale. Here's how to secure it.
What is Image Signing
Container image signing binds a cryptographic signature to an image's digest so you can prove what's running is what was actually built — not just scanned.
Distroless Container Images: Stripping the Attack Surface to Nothing
Distroless images remove the shell, package manager, and everything else an attacker needs post-exploitation. Here is how to use them, what breaks, and whether the security tradeoff is worth it.
What is Admission Control (Kubernetes)
Admission control is the last checkpoint in Kubernetes before an object is written to etcd — here's how webhooks, PSA, and policy engines enforce it.
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