containers
Safeguard articles tagged "containers" — guides, analysis, and best practices for software supply chain and application security.
66 articles
Cloud-Native Application Security: Securing the Full Stack in 2026
Cloud-native apps spread risk across code, containers, and infrastructure-as-code. This guide maps the full attack surface and a layered strategy to secure all of it.
eBPF Runtime Security for Kubernetes
eBPF lets you observe and enforce security at the kernel level — every syscall, network connection, and process exec — without kernel modules or instrumenting your apps. Here is how tools like Falco, Tetragon, and Cilium use it to catch what image scanning cannot.
Service Mesh Security: mTLS, Authorization, and Zero Trust
A service mesh can give you mutual TLS between every service, identity-based authorization, and encrypted traffic without touching application code — or it can become an over-privileged proxy layer you never locked down. Here is how to do it right.
Container Security Fundamentals
Containers made shipping software faster, but every image is a stack of inherited software with its own attack surface. This guide covers the fundamentals: what a container really is, where the risks live, and the practices that keep images and runtimes safe.
Kubernetes Admission Controllers for Security
Admission controllers are the policy chokepoint between a validated API request and a running workload. Used well, they enforce your entire security posture. Here is how validating webhooks, Kyverno, OPA, and the new CEL-based policies fit together.
Image Signing with Cosign and Sigstore
A container image tag proves nothing about who built the image or whether it was tampered with. Cosign and Sigstore fix that with cryptographic signatures and a public transparency log — here is how to sign, verify, and enforce.
Container Escape Vulnerabilities: How They Work and How to Stop Them
A container is a process with boundaries, not a virtual machine. When those boundaries fail, an attacker lands on the host. Here is the anatomy of real container escapes — runc, Leaky Vessels, Dirty Pipe — and how to defend against them.
The Risks of Secrets in Environment Variables (2026)
Environment variables feel like the safe place to put secrets — but they leak through crash dumps, child processes, CI logs, and container layers. Here is where env-var secrets escape and what to do instead.
Securing the Kubernetes API Server
The API server is the front door to your cluster — every kubectl command, controller, and kubelet talks to it. If it is misconfigured, nothing else you harden matters. Here is how to lock it down.
The Best Cloud Security Tools in 2026
Cloud security spans posture, workloads, identities, and the software you ship. This balanced guide compares Wiz, Prisma Cloud, Microsoft Defender for Cloud, Orca, and Sysdig — and is honest about the slice a supply-chain tool covers.
Pod Security Standards: The Complete Guide
PodSecurityPolicy is gone. Pod Security Admission and the three Pod Security Standards are how you enforce baseline and restricted profiles in modern Kubernetes — here is how to adopt them without breaking workloads.
How to Scan a Container Image for Vulnerabilities
Scan any Docker or OCI image for OS-package and application-layer vulnerabilities, understand the results, and gate risky images before they reach your registry — with copy-paste commands.