The first step in any web assessment is identifying the attack surface. We begin with a port scan to identify running services.

When planning to take the course, consider whether to start with basic web security knowledge or build upon existing experience in penetration testing. This distinction can help in tailoring a study approach to best tackle the 12-week learning plan. WEB-200 Syllabus | OffSec

: Including Server-Side Request Forgery (SSRF), XML External Entity (XXE), and Server-Side Template Injection (SSTI).

The primary objective of WEB-200 is to build a deep, intuitive understanding of how web applications handle traffic, manage sessions, and parse inputs. By understanding the underlying mechanics of modern web architectures, security researchers can look beyond signature-based detection and uncover critical, multi-stage vulnerabilities. Core Technical Pillars of WEB-200

The payload is permanently saved on the target server (e.g., in a database) and executed when users view the infected page.

This guide serves as a comprehensive overview of the core architectural concepts, vulnerability classes, and manual exploitation methodologies covered within the WEB-200 curriculum. 1. Web Architecture and Reconnaissance Fundamentals