Open Source Security
Bundler Lockfile Security Practices
How to use Gemfile.lock as a real security artifact: checksums, frozen mode, reproducible resolves, and what changed in Bundler 2.5's expanded lockfile format.
Mar 1, 20268 min read
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Supply Chain Security, in plain English.
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.
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npm Workspaces Security Considerations
Workspaces are fantastic for developer experience and hostile to naive security tooling. Here is what actually changes when you flip them on.
Mar 1, 20266 min read
Open Source Security
Polyglot Monorepo: Unified Supply Chain Program
A 2026 unified supply chain program for polyglot monorepos — bringing Node, Python, Go, Java, and more under one set of policies — anchored by Safeguard.
Feb 28, 20267 min read
Open Source Security
JSR/Deno Package Ecosystem Supply Chain
JSR is the first mainstream package registry designed with supply chain security as a founding constraint. Here is what it gets right and what it has not solved yet.
Feb 28, 20267 min read
Open Source Security
Maven Central Changes in 2024 and Their Security Impact
Sonatype made several Maven Central changes in 2024 that materially affected the Java supply chain. A rundown of what changed, who was affected, and what Java teams should do.
Feb 28, 20266 min read
Open Source Security
PyPI Package Yanking Policies Analyzed
Yanking is PyPI's narrow, deliberately blunt tool for dealing with broken releases. A close analysis of what it does, what it doesn't do, and when to use it instead of a delete.
Feb 27, 20267 min read
Open Source Security
Go Workspaces Supply Chain Risks
Go workspaces make multi-module development feel natural, but the go.work file introduces a new trust boundary that can quietly override pinned versions and bypass checksum verification.
Feb 27, 20266 min read
Open Source Security
Managing Python Package Namespace Conflicts
Python's flat namespace creates real security problems. Here is how namespace packages, shadowing, and install order interact, and how to avoid the surprises.
Feb 26, 20266 min read
Open Source Security
.NET Supply Chain Audit Patterns
Auditing a .NET supply chain is a different exercise than auditing a JavaScript one, and the patterns that actually find problems are specific to how the ecosystem works.
Feb 26, 20266 min read
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