How to Sign Container Images With Cosign: A Complete Guide
A practical walkthrough for signing container images with Cosign using keyless OIDC, verifying signatures, and enforcing policy in your Kubernetes cluster.
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.
A practical walkthrough for signing container images with Cosign using keyless OIDC, verifying signatures, and enforcing policy in your Kubernetes cluster.
Helm charts are the most common Kubernetes deployment artifact and the least scrutinised. This blueprint covers chart provenance, signing, value validation, and the runtime correspondence checks that close the loop.
containerd runs most of Kubernetes today. Its defaults are reasonable, but reasonable is not hardened. Here is how to close the gaps.
Why multi-architecture container images break assumptions baked into signing, SBOM, and attestation tooling, and how to build a multi-arch pipeline that stays verifiable.
A container escape lets attackers break out of a container into the host or other workloads. Learn how these attacks work, real CVEs, and Kubernetes risk.
BuildKit's caching is what makes container builds fast. It is also a potential vector for cache poisoning attacks if not properly secured.
What is CIEM? A clear breakdown of Cloud Infrastructure Entitlement Management, how it differs from CSPM, and why excessive cloud permissions keep piling up.
A Kubernetes admission controller intercepts API requests before they're persisted, enforcing policy on Pods, images, and configs before workloads ever run.
Network policies are usually framed as a zero-trust tool. They are also one of the best defenses against a compromised dependency.
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