The term "Shift left security" describes the efforts of the DevOps team to integrate security tasks at the earliest stage of software development. But can we automate it and let software development teams focus on meeting business requirements while ensuring code quality and software security? In this talk, we will walk through the continuous integration (CI) and continuous delivery (CD) systems in use at 3fs which automates security tasks in all the stages of the development process. We will see how CI/CD systems made our DevOps teams DevSecOps teams.