Bitbucket Security Best Practices Cheat Sheet

Identity & Access Management:Enforce SSO and 2FA via your IdP, prioritize SSH keys over passwords, and use SCIM as your "cleanup crew" to automate the user lifecycle.
Repository & Project Hardening:Protect your "crown jewels" by mandating branch protection rules, requiring pull request reviews, and applying permissions at the most granular level.
CI/CD & Pipeline Hardening:Treat your pipeline as a "privileged assembly line" by isolating runners, masking secured variables, and scanning open-source dependencies.

This cheat sheet is designed for:

Platform Engineers / Bitbucket Administrators: Harden configurations for Cloud or Data Center deployments, manage user lifecycles, and standardize secure defaults across the workspace.
DevSecOps & DevOps Professionals: Secure the CI/CD assembly line by locking down runner access, securing pipeline secrets, and embedding SCA and container scanning.
Security Engineers: Apply proven hardening and monitoring strategies to prevent token abuse, secrets leakage, and supply chain compromise using native Bitbucket controls.
Security Leaders & IT Managers: Move from basic hygiene to a robust, defensible security posture with a practical roadmap to reduce organizational risk.
Compliance & Audit Teams: Improve visibility through advanced auditing and use Atlassian Guard to enforce org-wide settings and regulatory traceability.

What’s included?

Centralized Identity & Access (IAM): Strategies for enforcing MFA, utilizing SCIM for auto-deprovisioning, and setting context-aware conditional access policies.
Repository & Project Lock down: How to mandate branch protection, require successful builds before merging, and utilize the Bitbucket hierarchy for granular control.
CI/CD Pipeline Hardening: Best practices for isolating runner network access and securing secrets using masked variables or external vaults like HashiCorp Vault.
Secrets & Sensitive Data Protection: Guidance on deploying automated secrets scanning across full Git history and using pre-receive hooks to block leaks.
Self-Hosted (Data Center) Hardening: Specific controls for patching, vetting third-party plugins, and ensuring backups are "more than just a theory" through test restores.

Identity & Access Management:Enforce SSO and 2FA via your IdP, prioritize SSH keys over passwords, and use SCIM as your "cleanup crew" to automate the user lifecycle.
Repository & Project Hardening:Protect your "crown jewels" by mandating branch protection rules, requiring pull request reviews, and applying permissions at the most granular level.
CI/CD & Pipeline Hardening:Treat your pipeline as a "privileged assembly line" by isolating runners, masking secured variables, and scanning open-source dependencies.

This cheat sheet is designed for:

Platform Engineers / Bitbucket Administrators: Harden configurations for Cloud or Data Center deployments, manage user lifecycles, and standardize secure defaults across the workspace.
DevSecOps & DevOps Professionals: Secure the CI/CD assembly line by locking down runner access, securing pipeline secrets, and embedding SCA and container scanning.
Security Engineers: Apply proven hardening and monitoring strategies to prevent token abuse, secrets leakage, and supply chain compromise using native Bitbucket controls.
Security Leaders & IT Managers: Move from basic hygiene to a robust, defensible security posture with a practical roadmap to reduce organizational risk.
Compliance & Audit Teams: Improve visibility through advanced auditing and use Atlassian Guard to enforce org-wide settings and regulatory traceability.

What’s included?

Centralized Identity & Access (IAM): Strategies for enforcing MFA, utilizing SCIM for auto-deprovisioning, and setting context-aware conditional access policies.
Repository & Project Lock down: How to mandate branch protection, require successful builds before merging, and utilize the Bitbucket hierarchy for granular control.
CI/CD Pipeline Hardening: Best practices for isolating runner network access and securing secrets using masked variables or external vaults like HashiCorp Vault.
Secrets & Sensitive Data Protection: Guidance on deploying automated secrets scanning across full Git history and using pre-receive hooks to block leaks.
Self-Hosted (Data Center) Hardening: Specific controls for patching, vetting third-party plugins, and ensuring backups are "more than just a theory" through test restores.

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