Npm Security Best Practices

Collection of npm package manager Security Best Practices

1.3k stars43 forks5 entriesLast push May 24, 2026 (4 months ago)License Apache-2.0

This page lists names, links and short descriptions. The original list on GitHub is the source and belongs to its authors.

1. Disable Post-Install Scripts >1.2. Bun disable post-install scripts

Bun disables postinstall scripts by default

and maintains its own internal allow-list of packages that are allowed to run postinstall scripts. Bun allows an "escape hatch" to allow postinstall scripts for specific trusted packages via a trustedDependencies field in package.json.

1. Disable Post-Install Scripts >1.3 Run the scripts you need

Use

to create an allowlist of specific positions in your dependency graph where scripts are allowed.

In 2 lists

3. Install with Cooldown >3.2. Snyk automated dependency upgrades with cooldown

Snyk automatically includes a built-in cooldown period

for dependency upgrade Pull Requests. Snyk does not recommend upgrades to versions that are less than 21 days old to avoid:

10. Work in Dev Containers

Development containers

(dev containers) provide an isolated, sandboxed environment that limits the blast radius of supply chain attacks. When malicious npm packages execute during installation or runtime, they are confined to the container environment rather than having access to your entire host system where you may…