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slsa

Safeguard articles tagged "slsa" — guides, analysis, and best practices for software supply chain and application security.

77 articles

Software Supply Chain Security

What is an Attestation (Software Security)

Software attestations are signed, verifiable proofs of how code was built and secured — now a legal requirement for US federal software vendors since March 2024.

Mar 5, 20267 min read
SBOM & Compliance

in-toto Attestation Formats Reviewed

The in-toto attestation framework is the plumbing under SLSA, Sigstore, and most supply chain tooling. Here is a practical review of the v1 formats and their edges.

Mar 3, 20266 min read
Software Supply Chain Security

Build provenance

What is build provenance and why does it matter? A practical guide to SLSA attestations, provenance predicates, and verification pipelines for software supply chains.

Mar 3, 20267 min read
Software Supply Chain Security

in-toto Attestation Framework Walkthrough 2026

A working engineer's tour of in-toto in 2026: layouts, links, the attestation predicate ecosystem, and how it composes with SLSA, sigstore, and SBOMs.

Mar 2, 20265 min read
SBOM & Compliance

SLSA for Go Releases: A Practical Guide

Go's build model makes SLSA provenance more tractable than most ecosystems. Here is the practical guide for producing and verifying provenance on Go releases.

Feb 26, 20266 min read
Engineering

SLSA Level 3 in Practice: What It Takes

SLSA Build L3 is achievable in a week per repo if you use a hosted builder — and nearly impossible if you insist on rolling your own. Here is the practical path.

Feb 23, 20266 min read
SBOM & Compliance

SLSA Build L1 to L3 Migration Playbook

Moving from SLSA Build L1 to L3 is less a single upgrade and more a series of hardening steps. Here is the playbook we use with customers, mapped to the v1.0 specification.

Feb 19, 20267 min read
Software Supply Chain Security

How to implement software supply chain security with SLSA

A step-by-step guide to implement SLSA supply chain security: map risk, generate signed provenance, and enforce verification before deploy.

Feb 17, 20268 min read
Concepts

What is a Software Attestation

A software attestation is a signed, machine-readable claim about an artifact — who built it, what it contains, which checks it passed — that a machine can verify before trusting it.

Feb 17, 20266 min read
Open Source Security

How to Publish an npm Package With Provenance

A step-by-step tutorial for publishing npm packages with provenance attestations so your consumers can cryptographically verify the build source.

Feb 16, 20266 min read
Software Supply Chain Security

SLSA Level 3 Implementation Blueprint 2026

A practical blueprint for reaching SLSA Level 3 in 2026: hosted builders, provenance generation, verification gates, and the operational habits that hold the line.

Feb 15, 20266 min read
Engineering

npm Provenance Statements: What They Prove and What They Don't

npm provenance ties a package to the commit and CI run that built it. That's genuinely useful — and narrower than most teams assume. Here's the exact boundary.

Feb 11, 20266 min read

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slsa (Page 5) — Safeguard Blog