Day 11 | Advent of Cyber 2025 | XSS – Merry XSSMas Walkthrough | TryHackMe

In Day 11 of TryHackMe’s Advent of Cyber 2025, we unwrap the challenge XSS – Merry XSSMas. This task focuses on Cross-Site Scripting (XSS) vulnerabilities, showing how attackers can inject malicious code into web applications and how defenders can prevent it.

🔑 What you’ll learn in this video:

The difference between Reflected XSS and Stored XSS

How to craft and test payloads in vulnerable web apps

Real-world impacts of XSS attacks (cookie theft, phishing, defacement)

Best practices for mitigating XSS (input sanitization, encoding, secure cookies)

🎄 This festive challenge blends holiday fun with practical web security skills, helping you strengthen your penetration testing and defensive knowledge.

👉 If this walkthrough helps you, don’t forget to like, comment, and subscribe for more Advent of Cyber content and cybersecurity learning journeys.

#TryHackMe #AdventOfCyber2025 #CyberSecurity #XSS #WebSecurity #CTF

Видео Day 11 | Advent of Cyber 2025 | XSS – Merry XSSMas Walkthrough | TryHackMe канала CyberXPopsy