[StepSecurity] Apply security best practices

[step-security-bot]

Summary

This pull request is created by StepSecurity at the request of @pboling. Please merge the Pull Request to incorporate the requested changes. Please tag @pboling on your message if you have any questions related to the PR.

Security Fixes

Least Privileged GitHub Actions Token Permissions

The GITHUB_TOKEN is an automatically generated secret to make authenticated calls to the GitHub API. GitHub recommends setting minimum token permissions for the GITHUB_TOKEN.

• GitHub Security Guide
• The Open Source Security Foundation (OpenSSF) Security Guide

Pinned Dependencies

GitHub Action tags and Docker tags are mutable. This poses a security risk. GitHub's Security Hardening guide recommends pinning actions to full length commit.

• GitHub Security Guide
• The Open Source Security Foundation (OpenSSF) Security Guide

Harden Runner

Harden-Runner is an open-source security agent for the GitHub-hosted runner to prevent software supply chain attacks. It prevents exfiltration of credentials, detects tampering of source code during build, and enables running jobs without sudo access. See how popular open-source projects use Harden-Runner here.

Harden runner usage

You can find link to view insights and policy recommendation in the build log

Please refer to documentation to find more details.

Add OpenSSF Scorecard Workflow

OpenSSF Scorecard is an automated tool that assesses a number of important heuristics ("checks") associated with software security and assigns each check a score of 0-10. You can use these scores to understand specific areas to improve in order to strengthen the security posture of your project.

Scorecard workflow also allows maintainers to display a Scorecard badge on their repository to show off their hard work.

• The Open Source Security Foundation (OpenSSF) Scorecard

Maintain Code Quality with Pre-Commit

Pre-commit is a framework for managing and maintaining multi-language pre-commit hooks. Hooks can be any scripts, code, or binaries that run at any stage of the git workflow. Pre-commit hooks are useful for enforcing code quality, code formatting, and detecting security vulnerabilities.

• Official Pre-commit documentation
• Getting Started guide

Feedback

For bug reports, feature requests, and general feedback; please email support@stepsecurity.io. To create such PRs, please visit https://app.stepsecurity.io/securerepo.

Signed-off-by: StepSecurity Bot bot@stepsecurity.io

[Copilot]

Pull request overview

This PR applies supply-chain hardening to the repository’s GitHub Actions setup and introduces additional automated security tooling (Scorecards + pre-commit).

Changes:

• Add least-privilege permissions to workflows and pin GitHub Actions to commit SHAs.
• Add step-security/harden-runner to CI workflows to audit outbound network calls.
• Add new OpenSSF Scorecard workflow and a new .pre-commit-config.yaml.

Reviewed changes

Copilot reviewed 22 out of 22 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
.pre-commit-config.yaml	Adds a pre-commit configuration for secret scanning and basic formatting hooks.
.github/workflows/windows.yml	Pins actions, adds hardened runner, and restricts token permissions for Windows CI.
.github/workflows/macos.yml	Pins actions, adds hardened runner, and restricts token permissions for macOS CI.
.github/workflows/unsupported.yml	Pins actions and adds hardened runner for unsupported Ruby matrix testing.
.github/workflows/unlocked_deps.yml	Pins actions and adds hardened runner for unlocked dependency testing.
.github/workflows/truffle.yml	Pins actions and adds hardened runner for TruffleRuby CI.
.github/workflows/supported.yml	Pins actions and adds hardened runner for supported Ruby matrix testing.
.github/workflows/style.yml	Pins actions and adds hardened runner for style checks.
.github/workflows/scorecards.yml	Introduces OpenSSF Scorecard analysis workflow with pinned actions and scoped permissions.
.github/workflows/opencollective.yml	Pins actions and adds hardened runner for the OpenCollective backers update workflow.
.github/workflows/locked_deps.yml	Pins actions and adds hardened runner for locked dependency testing.
.github/workflows/license-eye.yml	Pins actions and adds hardened runner for dependency license scanning.
.github/workflows/legacy.yml	Pins actions and adds hardened runner for legacy Ruby testing.
.github/workflows/jruby.yml	Pins actions and adds hardened runner for JRuby testing.
.github/workflows/heads.yml	Pins actions and adds hardened runner for “head” runtime testing.
.github/workflows/dependency-review.yml	Pins actions and adds hardened runner for dependency review.
.github/workflows/dep-heads.yml	Pins actions and adds hardened runner for runtime dependency HEAD testing.
.github/workflows/current.yml	Pins actions and adds hardened runner for “current” Ruby runtimes testing.
.github/workflows/coverage.yml	Pins actions and adds hardened runner for coverage workflow steps.
.github/workflows/codeql-analysis.yml	Pins CodeQL actions, adds hardened runner, and scopes workflow permissions.
.github/workflows/auto-assign.yml	Pins auto-assign action, adds hardened runner, and scopes workflow permissions.
.github/workflows/ancient.yml	Pins actions and adds hardened runner for EOL Ruby testing.

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