DevSecOps Essentials (DSE) — Lesson 1: DevSecOps Culture, Governance, Threat Modeling, Backlog, and Security Ownership

Learning Objectives

• Explain the structures, services, data, settings, roles, and dependencies governing Shared Responsibility and Security Champions.
• Implement and validate Threat Modeling, Security Backlog, and Risk Acceptance and Governance using reviewable evidence.
• Evaluate the condition where the observed result differs from the approved Shared Responsibility baseline because Security Champions scope, permissions, or prerequisites were missed and select a proportionate corrective response.

Detailed Topics

• Shared Responsibility applied to the course scenario, expected behavior, dependencies, controls, and evidence.
• Security Champions applied to the course scenario, expected behavior, dependencies, controls, and evidence.
• Threat Modeling applied to the course scenario, expected behavior, dependencies, controls, and evidence.
• Security Backlog applied to the course scenario, expected behavior, dependencies, controls, and evidence.
• Risk Acceptance and Governance applied to the course scenario, expected behavior, dependencies, controls, and evidence.

Instructor Demonstration

The instructor traces a product team must accelerate delivery while embedding proportionate security controls, preserving developer flow, and producing auditable evidence. The walkthrough connects tools, configuration or analysis logic, system messages, decisions, and evidence captured in the DevSecOps control map, secure-pipeline evidence, dependency report, and improvement backlog. It also tests the exception where the observed result differs from the approved Shared Responsibility baseline because Security Champions scope, permissions, or prerequisites were missed.

Hands-On Exercise

Complete a controlled, authorized EC-Council exercise covering DevSecOps Culture, Governance, Threat Modeling, Backlog, and Security Ownership and preserve the verified result in the DevSecOps control map, secure-pipeline evidence, dependency report, and improvement backlog.

1. Confirm scope, authorization, prerequisites, versions, identities, dependencies, and acceptance criteria.
2. Execute the workflow while recording settings, outputs, events, decisions, and system messages.
3. Test normal behavior, one boundary condition, and the stated exception without targeting real third-party systems.
4. Document corrections, evidence, ownership, retest criteria, rollback or recovery, and handover actions.

Scenario Analysis

• Identify which object, service, policy, setting, or sequence most strongly influences Shared Responsibility.
• Compare two defensible responses and explain technical, security, operational, legal, and support trade-offs.
• Determine how the DevSecOps control map, secure-pipeline evidence, dependency report, and improvement backlog should be approved, retained, retested, and updated.

Troubleshooting Guidance

Start where expected behavior first differs from the observed result. Check authorization, prerequisites, identity, configuration order, data quality, version compatibility, connectivity, status, resource limits, and evidence separately. Treat “the observed result differs from the approved Shared Responsibility baseline because Security Champions scope, permissions, or prerequisites were missed” as a hypothesis until logs, settings, captured outputs, and retest outcomes confirm the cause.

Validation Checklist

• Required components, identities, permissions, settings, safety controls, and dependencies are present.
• The DevSecOps control map, secure-pipeline evidence, dependency report, and improvement backlog connects each conclusion to objective, reviewable evidence.
• Normal processing, a boundary condition, dependency behavior, and the stated exception were tested.
• Corrections, ownership, retest criteria, rollback or recovery, documentation, and operational handover are complete.

Lesson Outcome

Learners can apply DevSecOps Culture, Governance, Threat Modeling, Backlog, and Security Ownership, explain the resulting security or operational behavior, and defend the outcome through the DevSecOps control map, secure-pipeline evidence, dependency report, and improvement backlog.