Harden GitHub Actions workflows against the well-known footguns. Covers SHA-pinned third-party actions, scoped GITHUB_TOKEN permissions, OIDC in place of long-lived cloud credentials, the pull_request_target trap, untrusted-input interpolation, and protected deploy environments. Invoke when adding a new workflow, introducing a third-party action, or migrating from long-lived secrets to OIDC.
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GitHub Actions Security
GitHub Actions runs code with access to your secrets, your code, and increasingly your cloud accounts. Most teams ship workflows with the defaults, which are convenient but expose more than necessary. This skill is the working baseline for production-grade Actions usage.
When to invoke
Adding a new workflow
Introducing a third-party action (uses: someone/some-action@v1)
A workflow leaked a secret (cleanup + prevention)
Migrating from long-lived cloud cre
[Description truncada. Veja o README completo no GitHub.]