# Static Application Security Testing (SAST)

> Master SAST fundamentals, tool integration, and false positive tuning to catch code-level vulnerabilities early in the CI/CD pipeline.

Canonical: https://codelivly.com/rooms/static-application-security-testing-sast
Last updated: 2026-10-29

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

This module transitions you from manual code reviews to automated, scalable vulnerability detection. You will learn the core mechanics of Static Application Security Testing (SAST), including how Abstract Syntax Trees (AST), control flow, and data flow analysis identify security flaws without executing the code. We will cover best practices for integrating SAST tools into CI/CD pipelines, establishing secure baselines, and systematically tuning rules to eliminate false positives without compromising security coverage. The module culminates in a hands-on guided lab where you will configure a SAST scanner, analyze its initial output, and implement targeted suppressions and rule customizations to create a reliable, developer-friendly security quality gate.

## Lessons

1. What Is SAST and Why Does It Matter (30 min)
2. How Static Analysis Finds Flaws (Pattern Matching & Taint Tracking) (30 min)
3. Scanning Code with Semgrep (30 min)
4. Writing Custom Semgrep Rules (30 min)
5. Guided Lab: Adding a Semgrep Check to a Pull Request Pipeline (30 min)

## Related

- [Learning path: Application Security Testing in Pipelines](https://codelivly.com/learning-paths/application-security-testing-in-pipelines)
- [All rooms](https://codelivly.com/rooms)