DevSecOps integrates security into the software development lifecycle by embedding security measures within CI/CD pipelines, using tools like Snyk to automate vulnerability scans and alerts. This approach addresses the inefficiencies of traditional security checks, which are typically conducted at the end of development, leading to delays. A demonstration project using a simple Python (Flask) application illustrates how to set up security scanning with Snyk within a CircleCI pipeline, ensuring vulnerabilities in both application dependencies and Docker images are detected and resolved early. The process involves creating a Flask app, integrating Snyk for security scans, and updating dependencies to mitigate risks. Additionally, Docker image scanning is incorporated to prevent insecure images from being deployed. By using the Snyk Orb, security integration is streamlined, protecting both applications and infrastructure throughout the development process. The complete code for this tutorial is available on GitHub, offering a practical guide to implementing DevSecOps practices.