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How to harden GitHub Actions
Build resilient GitHub Actions workflows with insights from real attacks, missteps to avoid, and security tips GitHub’s docs don’t fully cover.
Finally, ensure that the Action follows best practices, such as proper version pinning and other safeguards we've outlined, to mitigate risks associated with supply chain vulnerabilities. In GitHub Actions, this typically happens when untrusted users can influence the code, configuration, or runtime behavior of Workflows that have elevated privileges—such as access to secrets or write permissions. In some cases, Workflows include logic that uses attacker-controlled inputs, generally through interpolated values in the run: Steps, dynamically evaluated parameters, or CLI arguments sourced from PR comments or issue metadata.
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