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What is DevSecOps?

DevSecOps explained: building security into CI/CD with SAST, DAST, dependency and container scanning, secrets management and policy as code, with a sample pipeline.

short answer

Short answer

DevSecOps is the practice of building security into every stage of software delivery instead of checking it at the end. In a DevSecOps pipeline, code is scanned with static analysis, dependencies and container images are checked for known vulnerabilities, secrets are kept in a vault, infrastructure policies are enforced as code, and running applications are tested dynamically before release.

By the Celestibia Solutions engineering team · Published

A typical DevSecOps pipeline

  1. Commit

    Pre-commit hooks and secret scanning stop credentials from entering the repository.

  2. Build

    Static application security testing (SAST) and dependency scanning run on every pull request.

  3. Package

    Container images are built from minimal base images and scanned before they are pushed to the registry.

  4. Infrastructure

    Terraform and Kubernetes manifests are checked against policy as code (for example Checkov or OPA).

  5. Test

    Dynamic application security testing (DAST) runs against a deployed test environment.

  6. Deploy and run

    Admission policies enforce rules in the cluster, and runtime detection watches for threats.

DevSecOps principles

  • Shift left: find issues where they are cheapest to fix, in the pull request.
  • Automate: security checks run on every change, not quarterly.
  • Make findings actionable: tune tools so developers only see real issues.
  • Least privilege: for people, pipelines and workloads.
  • Evidence by default: pipeline records double as audit evidence.

Why it matters

Frequent releases make manual security review impossible to scale. DevSecOps keeps security in step with delivery speed and produces the evidence that auditors and enterprise customers ask for, for standards such as SOC 2 and PCI DSS.

Key takeaways

  • DevSecOps embeds security checks into CI/CD rather than adding them at the end.
  • SAST, dependency scanning, image scanning, secrets management and policy as code are the core.
  • Tuning for low false positives is what makes developers adopt it.

Related questions

What is the difference between DevOps and DevSecOps?

DevOps unifies development and operations to deliver software quickly and reliably. DevSecOps adds security as a shared responsibility in that same workflow, with automated security checks in the pipeline.

Which tools are used for DevSecOps?

Common choices include SonarQube or Semgrep for SAST, Snyk or Trivy for dependency and image scanning, OWASP ZAP for DAST, HashiCorp Vault or AWS Secrets Manager for secrets, and Checkov or OPA for policy as code.

How Celestibia helps

DevSecOps ServicesSecurity testing, scanning, secrets and policy as code inside CI/CD.Cloud Security ServicesAssessments, IAM hardening, posture management, VAPT and compliance automation.DevOps as a ServiceManaged CI/CD, GitOps, infrastructure automation and monitoring.

Further reading

Technical article · InsightsApplication Security Testing Guide: SAST vs DAST vs Pentesting Explained (opens on insights.celestibia.com)Case study · InsightsHow We Built a Secure and Compliant FinTech Platform on AWS Using DevSecOps (opens on insights.celestibia.com)Technical article · InsightsCommon Cloud Security Misconfigurations and How to Fix Them Automatically (opens on insights.celestibia.com)

References

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