For years, the most common software development lifecycle (SDLC) model was the waterfall model. Under this model, developers moved in rigid stages, only addressing security once they had fully built the application.
While Waterfall worked in the past, it no longer does. Today’s software environment is defined by rapid release cycles, cloud-native architectures, and a sharp uptick in software supply chain attacks. In this context, waiting until the end of the SDLC to think about security is more than just inefficient—it’s dangerous.
This is why DevSecOps best practices have become the standard. They bake security into every stage of the SDLC through application security automation, continuous testing, and joint ownership across development, security, and operations teams. Instead of slowing teams down, they reduce rework, catch vulnerabilities earlier, and protect applications as they evolve without sacrificing speed.
This guide explores 14 DevSecOps best practices you can implement for a secure SDLC and build resilient software in today’s high-velocity, high-risk environment.
In cybersecurity, shift left means embedding automated security checks as early as possible into the SDLC, starting at code creation rather than waiting until deployment. By doing this, teams can detect vulnerabilities when they’re cheaper and faster to fix, minimizing downstream rework and the blast radius of security holes.
Common shift-left security practices these days include:
Continuous integration (CI) and continuous delivery (CD) pipelines allow teams to automatically build, test, and deploy code changes. As such, code changes are integrated and delivered smoothly and quickly, decreasing the risk of human error.
Key practices for securing CI/CD include:
Together, these controls allow teams to enforce fail-fast security decisions directly in the pipeline, blocking insecure code or misconfigured infrastructure from reaching later delivery stages.
Code obfuscation techniques transform application code so it’s difficult to reverse engineer, analyze, or tamper with. In modern DevSecOps, it’s one element of a larger build-time application protection strategy, where teams apply protections during the build process before release.
Teams use code protection tools like PreEmptive, which integrate directly with build systems such as MSBuild and Gradle, to help ensure builds are consistently and automatically hardened. This strategy protects intellectual property and reduces the chance of tampering once applications are deployed.
Threat modeling is the process of spotting, quantifying, and ranking risks to systems and data. In DevSecOps, it’s vital to do it early and often. A common approach is STRIDE, which focuses on six threat classes: spoofing, tampering, repudiation, information disclosure, denial of service, and elevation of privilege.
Other approaches include attack trees, which map out the steps a threat actor can take to attack an asset or target, and abuse-case mapping, which identifies and documents potential misuses of systems. For application programming interface (API)-driven and cloud-native systems, API threat modeling is especially important since exposed interfaces are a common entry point for modern attacks.
Microservices break applications into small, independent services that communicate over APIs rather than running as a single system. While this architecture improves development speed and scalability, it also expands the attack surface.
As such, teams must enforce secure service boundaries to reduce risk. They can do this by enforcing zero-trust principles across services, ensuring that every request is authenticated and authorized by default. API gateways can also help control and monitor service-to-service communication, and segmentation limits lateral movement if one service is compromised.
DevOps, like the rest of the world, is moving to the cloud. To protect their systems, DevOps teams must adopt cloud-native security controls. This often includes using containers and orchestration platforms (Docker, Kubernetes) alongside practices like container scanning, image signing, and ephemeral workloads.
Encrypting data both in transit and at rest is a foundational DevSecOps practice that helps safeguard confidential information against interception and improper access.
DevSecOps security tools and protocols for this include Transport Layer Security (TLS) 1.3, a modern version of TLS used for HTTPS that improves security and can reduce handshake latency, and mutual TLS (mTLS), a form of authentication where both the client and server present certificates for verification. Secrets managers also further reduce risk by centralizing secure storage, encryption, access control, and credential rotation, thereby minimizing the attack surface across environments.
Role-based access control (RBAC) ensures end-users can only access applications, systems, and data for their role, so there are fewer chances of unnecessary exposure of sensitive resources.
In DevSecOps, teams reinforce RBAC through identity-first security, where access decisions are based on the verified identity of the user or service making the request. Teams also adopt just-in-time access, granting permissions only when needed and for the shortest possible duration.
Centralized audit logging and pipeline telemetry integrated into Security Information and Event Management (SIEM) platforms give teams visibility into application, infrastructure, and pipeline activity. As a result, it’s easier to detect suspicious patterns before they escalate.
To fully reap the benefits of DevSecOps, organizations must embed it across teams, not just within security. Ways to do this include establishing shared service-level agreements (SLAs), promoting cross-functional ownership of security outcomes, and running blameless retrospectives to continuously improve processes.
Meeting compliance and policy standards doesn’t have to slow teams down. By embedding security standards such as ISO 27001 and PCI DSS into development workflows using policy-as-code tools and automated configuration scanning, teams can enforce requirements continuously and catch violations early.
It’s easier to prevent vulnerabilities during development than to fix them after release. DevSecOps teams can do this by enforcing secure coding standards at scale, using frameworks like OWASP ASVS and the CWE Top 25. Secure code linters and integrated development environment (IDE) integrations surface issues directly in developer workflows.
To ensure everyone is on the same page regarding DevSecOps security, organizations should provide continuous, role-based security training through short sessions, hands-on labs, and real secure code examples.
Modern applications rely heavily on third-party components, so the software supply chain is a primary target for threat actors. DevSecOps teams can reduce supply chain risk by generating software bill of materials (SBOMs), scanning dependencies and packages for known vulnerabilities, using signed artifacts to ensure integrity, and continuously monitoring upstream dependencies for emerging threats.
Implementing DevSecOps best practices can be challenging without tools that integrate cleanly into existing workflows.
PreEmptive supports DevSecOps by embedding build-time application protection directly into CI/CD pipelines, automating code obfuscation and tamper detection during the build process. This way, teams can protect applications before release without introducing manual steps or slowing delivery. With integration support for common build systems and platforms, PreEmptive fits naturally into modern DevSecOps workflows alongside other defense layers.
Ultimately, DevSecOps isn’t a checklist or a one-time shift, it’s a continuous approach to building, securing, and operating software at speed. By automating security across the SDLC and integrating protection into development workflows, teams can reduce risk without sacrificing velocity.
Interested in seeing how build-time protection can strengthen your DevSecOps pipeline? Try a free PreEmptive trial today.
DevSecOps stands for Development, Security, and Operations. While DevOps focuses on automating and integrating development and IT operations, DevSecOps adds security into the equation, ensuring that application security is built into every stage of the software development lifecycle (SDLC) rather than bolted on at the end.
Following DevSecOps best practices helps organizations proactively reduce vulnerabilities, protect sensitive data, and ensure compliance with security standards. These practices support faster development cycles without sacrificing security, which is essential in today’s fast-paced digital landscape.
Common DevSecOps tools include:
Code obfuscators and encryptors to protect source code
Static and dynamic application security testing (SAST/DAST) tools
Threat modeling frameworks
CI/CD pipeline integrations with built-in security scanning
PreEmptive’s tools are a great example of how these capabilities can be integrated directly into your build process.
Cross-site request forgery (CSRF) and reverse engineering are examples of common security risks that DevSecOps aims to prevent. By implementing protections like role-based access control, obfuscation, and secure cookie handling, teams can proactively guard against these threats.
PreEmptive offers a suite of tools—such as code obfuscation, data masking, and encryption—that help teams integrate security directly into the SDLC. These tools align with DevSecOps best practices by automating security protections, reducing risk, and supporting compliance without slowing down development.