sigstore
Safeguard articles tagged "sigstore" — guides, analysis, and best practices for software supply chain and application security.
69 articles
npm package signature verification: the 2026 rollout state
Every package on npm is signed by the registry, but the actual posture of install-time signature verification across real-world tooling is patchier than the headline suggests. This is where npm audit signatures and downstream verifiers stand in 2026.
npm provenance attestations walkthrough for 2026
npm provenance ties a published package to the specific GitHub Actions run that built it, signed through sigstore. Here is how to enable it for a publisher, verify it on the install side, and enforce it in CI without breaking your release process.
Model Weights as Supply Chain Artifacts: Signing and Provenance
A 4 GB safetensors file deserves the same signing, hashing, and provenance discipline as a container image. How to actually do it with Sigstore, OCI registries, and AIBOMs.
Container image signing and verification
Scanning tells you what's inside a container image; signing proves where it came from. Here's how signature verification closes the gap that CVE scanners like Trivy leave open.
OpenSSF Model Signing v1.0: Sigstore for ML
OpenSSF launched Model Signing v1.0 in April 2025 with Sigstore integration. NVIDIA NGC adopted it the same month. We explain what it signs, how to verify, and where the gaps are.
Container Image Supply Chain Security Deep Dive 2026
A senior-engineer deep dive into 2026 container image supply chain security: base image risk, provenance, signing, attestation chains, and what actually moves the needle.
Sigstore Policy Controller v0.15: TUF Delegation and Admission Posture
Policy Controller v0.15 ships sigstore-go's delegation-aware TUF client, a monthly cadence, and tighter integration with cosign 3.x. We benchmarked admission on a 400-node cluster.
Provenance, Attestation, and Signing: A Practical Glossary
Provenance describes how software was built, attestations are signed claims about that process, and signing proves origin. Here's how the pieces fit.
Sigstore, Cosign, and keyless container image signing
How Sigstore's Fulcio and Rekor make Cosign keyless container image signing possible, why Chainguard built its product around it, and where the real gaps still are.
Azure Artifacts Sigstore Integration Walkthrough 2026
A practical walkthrough for integrating Sigstore signing and verification with Azure Artifacts in 2026, including the gaps you should know about before starting.
Signing Python Wheels in Production
PyPI supports attestations now. Here is how to actually sign Python wheels in a CI pipeline, verify them at install time, and deal with the rough edges.
How to Sign Container Images with Cosign in Production
Keyless Cosign signing with Fulcio and Rekor is the 2026 default. Here is the production workflow, policy configuration, and the failure modes nobody warns you about.
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