DevSecOps is a framework that incorporates practices blending development (Dev), IT operations (Ops) and security (Sec) processes into one, streamlined process. Using this approach, DevSecOps teams are able to ensure that security is integrated into the software development lifecycle, ensuring that software is built, deployed and maintained with a “security-first” mindset. In this tutorial, we delve into the best practices for implementing DevSecOps and security measures throughout every stage of the development process.
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DevSecOps evolved from the DevOps methodology, which seeks to break down silos and communication barriers between developers and operations teams so that software can be created more rapidly and with more reliability. DevSecOps adds to the core principles of DevOps by integrating security teams and emphasizing collaboration among every stakeholder.
As cybersecurity threats continue to evolve and become more pervasive, DevSecOps becomes more popular, as organizations seek to mitigate these malicious actors. Part of the reasons companies are relying more and more upon DevSecOps is due to the fact that traditional security measures (such as occasional audits and static analysis processes) can no longer protect software architecture. DevSecOps replaces these traditional security practices by implementing automated testing, application performance monitoring and continuous integration.
Before we can discuss the best practices for implementing DevSecOps, we need to understand the core principles of DevSecOps. They include:
Below are some of the best practices for implementing DevSecOps, including:
The core of DevSecOps practices is to integrate security tools and best practices directly into the CI/CD pipeline from the start. This involves creating security checks for code quality and code integration, vulnerability scanning and compliance testing within the automated pipeline. This makes security a continuous process during every phase of the SDLC.
Infrastructure as Codeis a method you can use to define and manage infrastructure configurations using code. Adopting this best practice helps you ensure that infrastructure is securely provisioned and configured from the very beginning. One way to do this is via the use of IaC tools such as Terraform and AWS CloudFormation, which make it easier to maintain infrastructure consistency and security.
Automated security testing helps teams identify any vulnerabilities in both code and applications for every stage of development. One best practice for security implementation in this manner is to automate static code analysis, dynamic application security testing (also known as DAST), interactive application security testing (IAST), and unit tests. DevOps automation tools like OWASP ZAP and Fortify can be used to gather performance data and gain insights into any security issues.
As containerization continues to become more popular in software development organizations, you’ll want to make certain that container images get scanned for security vulnerabilities before they get deployed. Docker Security Scanning is one popular tool that you can use to identify and fix container image vulnerabilities. You’ll also want to incorporate security best practices into container orchestration platforms, such as Kubernetes, as well.
In order to detect and respond to security threats, DevSecOps professionals need to use continuous monitoring practices on software and infrastructure. DevOps monitoring and alerting tools can identify any odd behavior or possible vulnerabilities. Once detected, you can respond via your incident response plan to mitigate any threats.
Defining security compliance policies as code — and using automated tools to help enforce them — helps ensure that software and infrastructure adhere to security and compliance standards and regulations. Chef Compliance, in particular, is a great tool you can use to perform automated security compliance checks.
Another DevSecOps best practice that can be overlooked is the implementation of Role-Based Access Control, which dictates which users have access to specific resources and data. In general, you’ll want to make certain that any users have the least required privilege level based on their roles. Consider who needs access and why to any systems and assign privileges accordingly. Then, make a schedule to regularly review and update permissions to mitigate unauthorized access and data breaches.
Ensuring every team member and key stakeholder is trained in security best practices is an important step to ensuring security is implemented through the SDLC. Where appropriate, train team members on secure coding tactics, common security threats and methods they can use to respond to any security incidents. Make it a philosophy that the team views security as a shared responsibility and not the responsibility of only the security team.
Conducting threat modeling exercises helps you identify potential security threats and vulnerabilities in applications and supporting infrastructure. Take a proactive approach to addressing security concerns during the design phase, so you can prevent security issues from arising in the first place.
Most software and infrastructures make use of third-party libraries, plugins and components. Don’t neglect these or assume that they are safe. Conduct regular updates and patch fixes for third-party add-ons and libraries and use dependency scanning tools to find and fix vulnerabilities in third-party solutions.
It’s important to create separate testing environments that mirror production environments in order to conduct security tests that mimic real-world scenarios. This is key, as it can help you identify vulnerabilities that may not be as obvious in development and staging environments.
All security policies, processes, configurations, workflows and procedures need to be documented. Compliance checks and reporting should be performed on a scheduled, regular basis to ensure security controls are in place. These reports are necessary for audits and regulatory compliance so be sure to make this a routine process.
Finally, implement security orchestration and automation into your pipelines to streamline incident response processes. Automating incident responses makes it possible to contain and mitigate security risks and incidents more efficiently, reducing impact.
DevSecOps offers many benefits to organizations, but it isn’t without its challenges and risks, which include:
In this tutorial we learned that DevSecOps is an approach and framework organizations can adopt to build and deploy secure software rapidly and reliably. Integrating security from the beginning and into every stage of the development process lets companies proactively identify and fix security vulnerabilities before software is released, reducing the risk of security breaches and protecting data.
We also learned some DevSecOps best practices, which included automating security tests, training team members on all aspects of security and conducting threat models. As beneficial as DevSecOps practices are, implementing them isn’t without its challenges. Overcoming resistance to cultural change, upskilling teams and tool overwhelm/fatigue all need to be overcome for successful implementation. However, once those hurdles are overcome, your company will greatly benefit from higher quality software, faster development and release cycles and more secure products.
