devwalls academy
Pro AccessLevel: IntermediateDCWP Credential

Web Security

Exploitation and defense for modern client-server web applications

Deep dive into web application vulnerabilities based on the OWASP Top 10. Learn how modern client-server architectures communicate and where flaws emerge: SQL injection, cross-site scripting (XSS), insecure direct object references (IDOR), and broken authentication. Hands-on flag labs teach both exploitation and production-ready remediation.

Explore 8 Rooms
Hands-on Flag Labs Verifiable Certificate Browser Terminal

Course Specifications

Credential AwardedDCWP
Total Rooms8 interactive
Earnable XP 680 XP
Exam Length10 questions · 20 mins
Passing Score70% or higher
Delivery Mode100% In-Browser
Public Verification: Every graduate receives a unique permanent link on academy.devwalls.com.ng to verify their credential to employers and on LinkedIn.
Complete Curriculum

Syllabus & Learning Rooms (8)

Progressive sequence of concept briefings, hands-on terminal flag challenges, and a capstone boss assessment.

Total Path Value: 680 XP
01

Requests and responses

Lesson Brief

Dissecting HTTP headers, verbs, payloads, and browser security models.

+50 XP
02

Lab: Cookie crumbs

Hands-on Lab

Extract and analyze session cookies, authorization tokens, and flag values.

+80 XP
03

Injection explained

Lesson Brief

How untrusted user inputs manipulate database queries and backend commands.

+60 XP
04

Lab: Spot the unsafe query

Hands-on Lab

Audit backend source code to pinpoint SQL string concatenation flaws.

+80 XP
05

Cross-site scripting (XSS)

Lesson Brief

Stored, reflected, and DOM XSS vulnerabilities, and defense-in-depth mitigations.

+60 XP
06

Broken access control

Lesson Brief

Why IDOR and missing functional-level authorization cost businesses millions.

+60 XP
07

Lab: Spot the IDOR

Hands-on Lab

Inspect multi-tenant traffic logs to uncover unauthorized invoice access.

+90 XP
08

Boss: Web security review

Boss Challenge

End-to-end web vulnerability audit and defense architecture assessment.

+200 XP
Competencies

Skills You Will Master

Every concept is tested against real-world target scenarios, log files, or code repositories.

  • HTTP request and response header manipulation
  • Session management, cookies (HttpOnly, Secure, SameSite) and tokens
  • SQL injection exploitation & parameterized query defense
  • Cross-Site Scripting (XSS) triage & Content Security Policy (CSP)
  • Broken access control & Insecure Direct Object Reference (IDOR) hunting
  • Source code review & defensive software engineering

Prerequisites

  • Basic web development understanding (HTTP, HTML, JavaScript, SQL basics)

Associated Career Roles

Application Security EngineerWeb Penetration TesterFull-Stack Security DeveloperBug Bounty Hunter
Tamper-Resistant Credential

Devwalls Certified Web Security Practitioner

Upon completing all 8 rooms, you unlock the official proctor-free examination. Score 70% or higher to earn this credential, complete with LinkedIn integration, PDF generation, and public verification ID.

10
Random Questions
20 Mins
Time Limit
70%
Passing Grade
24h
Retake Cooldown
Credential Code
DW-DCWP-SAMPLE
Devwalls credentials are cryptographically stamped with completion timestamps, syllabus versions, and verified by hiring teams globally.
Verify Credentials Guide
Questions & Answers

Frequently Asked Questions about Web Security

What tools are used in the Web Security labs?

Labs run directly in your browser with interactive log viewers, code diff analyzers, and terminal simulations—no local software installation required.

Ready to master Web Security?

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