# Secure SDLC and Shift-Left Security

> Master the fundamentals of integrating security early into the Software Development Life Cycle to prevent vulnerabilities before they reach production.

Canonical: https://codelivly.com/rooms/secure-sdlc-and-shift-left-security
Last updated: 2026-10-28

| | |
|---|---|
| Level | Intermediate |
| Category | Cybersecurity |
| Lessons | 5 |
| Estimated time | 30 min |
| XP | 100 |

This module introduces the foundational concepts of the Secure Software Development Life Cycle (SSDLC) and the "Shift-Left" security philosophy. You will learn why fixing security flaws early is exponentially cheaper and more effective than addressing them in production. We will explore the core phases of the SSDLC, the cultural shift required to make security a shared responsibility, and the basic concepts behind automating security checks. The module culminates in a hands-on guided lab where you will map security activities to a standard development lifecycle and identify critical early intervention points.

## Lessons

1. What Is a Secure SDLC and Why Does It Matter (30 min)
2. Shift-Left Principles and Security Gates (30 min)
3. Mapping Security Activities to SDLC Phases (30 min)
4. Maturity Models (OWASP SAMM, BSIMM) (30 min)
5. Guided Lab: Embedding Security Gates into an SDLC Diagram (30 min)

## Related

- [Learning path: Secure SDLC and Threat Modeling](https://codelivly.com/learning-paths/secure-sdlc-and-threat-modeling)
- [All rooms](https://codelivly.com/rooms)