DevSecOps School

Introduction & Overview What is Ansible? Ansible is an open-source automation platform used for configuration management, application deployment, and task automation. It simplifies complex IT operations by allowing users to define infrastructure as code (IaC) using human-readable YAML files called playbooks. History or Background Ansible was created by Michael DeHaan in 2012 and acquired by…

Introduction & Overview AWS CloudFormation is a cornerstone of Infrastructure as Code (IaC), enabling organizations to automate, manage, and secure cloud infrastructure at scale. In the DevSecOps paradigm, where security is integrated into the development and operations lifecycle, CloudFormation provides a robust framework for defining, deploying, and maintaining cloud resources securely and efficiently. This tutorial…

Introduction & Overview Terraform, developed by HashiCorp, is a cornerstone tool in modern infrastructure management, particularly within DevSecOps. This tutorial provides an in-depth exploration of Terraform, focusing on its role in integrating security, development, and operations. It covers core concepts, architecture, setup, real-world applications, benefits, limitations, best practices, and comparisons with alternatives, equipping readers with…

Introduction & Overview In today’s fast-paced software development landscape, integrating security into the DevSecOps pipeline is critical to delivering secure, high-quality applications. Open Source Software (OSS) is a cornerstone of modern development, but it introduces potential security risks due to vulnerabilities in third-party libraries and dependencies. The OSS Index, maintained by Sonatype, is a powerful…

Introduction & Overview In modern software development, managing dependencies is critical to ensure consistency, reliability, and security across development, testing, and production environments. Dependency lock files play a pivotal role in this process by providing a mechanism to pin exact versions of dependencies, ensuring reproducible builds and mitigating risks associated with untested or vulnerable dependency…

Introduction & Overview In the fast-evolving landscape of DevSecOps, ensuring secure, reproducible, and stable software deployments is critical. Version pinning is a foundational practice that helps teams maintain control over dependencies, mitigate security risks, and ensure consistency across development, testing, and production environments. This tutorial provides an in-depth exploration of version pinning, its role in…

1. Introduction & Overview What is a Package Manager? A package manager is a tool that automates the process of installing, upgrading, configuring, and removing software packages. It streamlines dependency management, ensures compatibility, and supports version control. Popular examples: Background Package managers have existed since early Unix systems (e.g., pkg, rpm) and have evolved to…

Introduction & Overview Open source software (OSS) is a cornerstone of modern software development, enabling rapid innovation and collaboration. However, its widespread use introduces significant risks, particularly in the context of DevSecOps, where security is integrated into the development and operations lifecycle. This tutorial provides an in-depth exploration of open source risks, their relevance in…

Introduction & Overview The Common Vulnerability Scoring System (CVSS) is a standardized framework for assessing the severity of security vulnerabilities in software and systems. In the fast-paced world of DevSecOps, where security is integrated into every phase of the software development lifecycle (SDLC), CVSS plays a critical role in prioritizing vulnerabilities and enabling teams to…