This guide focuses on securing code repositories and developer workflows in GitHub. It stresses strong authentication as the first line of defense, including mandatory MFA, secure handling of SSH keys and tokens, and eliminating password-based access. It also covers securing organizations through controlled third-party integrations, IP allowlists, and SSO for centralized access management. On the repository level, it recommends audit logging, branch protection, artifact attestations, and strict rulesets to prevent unauthorized changes. The key takeaway is that GitHub security depends on identity control, access governance, and protecting the software supply chain end-to-end.

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