Lesson 5: OWASP Top 10 Web Vulnerabilities

The OWASP Top 10 is a list of the most common and dangerous web security vulnerabilities. Every ethical hacker must understand them.

1. SQL Injection

' OR '1'='1

Occurs when user input is not properly validated.

2. Cross-Site Scripting (XSS)

<script>alert('XSS')</script>

3. Broken Authentication

Weak login systems allow attackers to access accounts.

4. Security Misconfiguration

Default passwords, open admin panels, and exposed services.