Continuous Integration/Continuous Delivery (CI/CD) pipelines are crucial to software development organizations as they enable faster, more frequent, and reliable delivery of software. However, the rapid adoption of CI/CD has led to an increase in security threats. This article discusses the importance of securing CI/CD pipelines, the top 10 CI/CD security risks, measures to mitigate these risks, best practices for hardening CI/CD pipelines, and how AI/ML can help improve CI/CD security. Adopting CI/CD security best practices is essential to protect organizations from potential attacks and ensure the successful delivery of software.