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DevSecOps in Practice

A Hands-On Guide to Operationalizing DevSecOps at Scale

What you'll learn

The DevSecOps philosophy, mindset, and practices.

Establishing a secure and structured Git workflow for collaboration, managing repositories safely, ignoring sensitive data, and rewriting Git history to remove leaked secrets.

Implementing robust security practices for your Git repositories, including access controls, branch protection, commit signing with GPG keys, secure authentication using SSH keys, and more.

Preventing and detecting secret leaks proactively through tools like TruffleHog, implementing pre-commit hooks, and using scanning tools for secrets management.

Scanning dependencies for vulnerabilities using OWASP Dependency-Check and understanding CVEs, CVSS, CWE, and CPE identifiers to keep your software supply chain secure.

Improving your code quality and security using security linting tools like Bandit, identifying issues such as SQL injections, insufficient input validation, improper error handling, insecure deserialization, and weak cryptographic practices.

Security linting your Dockerfiles using tools like Hadolint to catch common issues like overly permissive configurations and insecure instructions.

Building secure container images with best practices for writing Dockerfiles and managing Docker registries, including using multi-stage builds, setting proper user permissions, and avoiding pitfalls.

Scanning your Docker images for vulnerabilities using container-scanning tools like Trivy, interpreting scan reports, and applying findings proactively.

Setting up and securing your Kubernetes infrastructure using Infrastructure as Code (IaC) techniques and tools like Terraform.

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The DevSecOps philosophy, mindset, and practices.

Establishing a secure and structured Git workflow for collaboration, managing repositories safely, ignoring sensitive data, and rewriting Git history to remove leaked secrets.

Implementing robust security practices for your Git repositories, including access controls, branch protection, commit signing with GPG keys, secure authentication using SSH keys, and more.

Preventing and detecting secret leaks proactively through tools like TruffleHog, implementing pre-commit hooks, and using scanning tools for secrets management.

Scanning dependencies for vulnerabilities using OWASP Dependency-Check and understanding CVEs, CVSS, CWE, and CPE identifiers to keep your software supply chain secure.

Improving your code quality and security using security linting tools like Bandit, identifying issues such as SQL injections, insufficient input validation, improper error handling, insecure deserialization, and weak cryptographic practices.

Security linting your Dockerfiles using tools like Hadolint to catch common issues like overly permissive configurations and insecure instructions.

Building secure container images with best practices for writing Dockerfiles and managing Docker registries, including using multi-stage builds, setting proper user permissions, and avoiding pitfalls.

Scanning your Docker images for vulnerabilities using container-scanning tools like Trivy, interpreting scan reports, and applying findings proactively.

Setting up and securing your Kubernetes infrastructure using Infrastructure as Code (IaC) techniques and tools like Terraform.

Implementing immutable infrastructure principles to reduce configuration drift, minimize your attack surface, enforce security compliance automatically, and speed up vulnerability response.

Managing your infrastructure securely with Terraform, analyzing IaC files using security-focused tools such as Checkov, and addressing common security issues like permissive IAM roles, unencrypted resources, and publicly accessible resources.

Creating and deploying secure Kubernetes manifests, including detailed steps for avoiding common pitfalls.

Conducting security analyses of your Kubernetes manifests using static analysis tools like KubeLinter to enforce secure defaults and compliance requirements.

Building and managing your Software Bill of Materials (SBOM) using tools like Syft and OWASP Dependency-Track to improve your software supply chain security.

Implementing proactive and continuous security through Security Policy as Code (SPaC) using tools such as NeuVector, enforcing compliance standards, vulnerability management, and creating automated response rules and policies.

Building end-to-end continuous security and proactive security practices into your DevOps and DevSecOps processes.

Building real-world DevSecOps pipelines using GitLab CI, enforcing and reporting security policies, scanning for vulnerabilities, preventing secret leaks, linting code, detecting misconfigurations, preventing supply chain attacks, generating SBOMs, and more.

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Description

"Security is not an afterthought," "Security is everyone's responsibility," "Shift left security," and "Security is a team sport." These are some of the mantras that have been used to promote the integration of security into the software development lifecycle. DevSecOps is DevOps with security woven deep into every practice. From a cultural perspective, it's about promoting a security-first mindset, where security is the responsibility of everyone in the organization. From a process perspective, it's about integrating security practices like threat modeling, security testing, and security rev…


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"Security is not an afterthought," "Security is everyone's responsibility," "Shift left security," and "Security is a team sport." These are some of the mantras that have been used to promote the integration of security into the software development lifecycle. DevSecOps is DevOps with security woven deep into every practice. From a cultural perspective, it's about promoting a security-first mindset, where security is the responsibility of everyone in the organization. From a process perspective, it's about integrating security practices like threat modeling, security testing, and security reviews into the development and operations workflows. Finally, from a technical perspective, it's about integrating security tools like static/dynamic analysis, security monitoring, policy enforcement, and security incident response into the DevOps pipeline and the infrastructure.

But where do you start? That’s exactly what DevSecOps in Practice is about.

Throughout these pages, you'll discover how to effectively weave security into every stage of your software development lifecycle, using proven DevSecOps practices and powerful tools. We'll share practical steps, real-world examples, and clear guidance to help your teams collaborate more effectively, reduce security vulnerabilities, and speed up your delivery without sacrificing safety.

If you're tired of midnight alerts, last-minute security scrambles, and endless conflicts between teams, you're in the right place. It's time to put security at the heart of your software delivery—and transform the way you build and deploy software for good.

DevSecOps in Practice is for every developer, operations engineer, security engineer, and anyone else involved in the software development lifecycle who wants to get their hands dirty, learn from each step, and, most importantly—start building. Because when you "just do it," you don't only learn faster; you also create solutions that are robust, resilient, and secure from the ground up.

You don't need to be a security expert to start implementing the practices in this guide. The code snippets and examples are designed to be easy to understand and follow, the security concepts are explained in a way that is accessible to everyone, the tools used are open-source and widely available, and the infrastructure is accessible to everyone.

DevSecOps is not a role but a set of practices to implement continuous security that covers the entire SDLC, and it's the responsibility of security engineers, system administrators, operation engineers, developers, architects, network engineers, and all IT professionals. DevSecOps in Practice is designed to be accessible to all these roles.

Welcome to a more responsible DevOps implementation. Welcome to the world of DevSecOps.


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Tools and technologies you will practice

Syft logoSyft Flask logoFlask Grype logoGrype Trivy logoTrivy Bandit logoBandit Docker logoDocker checkov logocheckov Hadolint logoHadolint NeuVector logoNeuVector Kubernetes logoKubernetes pre-commit logopre-commit KubeLinter logoKubeLinter TruffleHog logoTruffleHog GitLab CI/CD logoGitLab CI/CD detect-secrets logodetect-secrets OWASP Dependency-Check logoOWASP Dependency-Check

Course content

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.

This chapter is presented as a single continuous section. View it here.


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336 words

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The author

Aymen El Amri

Aymen El Amri

@eon01

Aymen El Amri is a software and cloud-native engineer, trainer, author, and technopreneur with 15+ years of experience in building and scaling distributed systems, cloud architectures, and modern software delivery pipelines.

He founded FAUN.dev(), one of the web's most active developer communities focused on Kubernetes, cloud-native engineering, modern software delivery, and other related topics.

He has trained thousands of engineers on DevOps, SRE, Kubernetes, microservices, and cloud architectures, helping teams build reliable and scalable systems. His technical guides and courses are widely used by engineers and organizations looking to adopt cloud-native practices.

His work earned several honors, including a national open-source award. He also advises companies on shaping their cloud-native and platform engineering direction. TechBeacon listed him among the top 100 DevOps professionals to follow.

Find him on FAUN.dev()LinkedIn and X.

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DevSecOps in Practice

A Hands-On Guide to Operationalizing DevSecOps at Scale