Hackers in Your Browser: Step-by-Step Instructions on How to Hack and Secure Your Browser Extension

Are you a solo developer or a small team building a browser extension? You've poured your heart into your code, but have you ever wondered how a hacker would attack it?

Most security guides are written for experts, leaving indie developers and newbies in the dark. Until now.

"Hackers in Your Browser" is your practical, step-by-step playbook to thinking like a hacker and building fortifications like a pro. We demystify the top vulnerabilities that target browser extensions and their backends, teaching you through clear, hands-on examples.

Stop Guessing About Security. Start Knowing.

In this book, you will learn how to exploit and, most importantly, defend against:

• Injection Attacks: Learn how attackers can poison your data and how to build queries they can't break.

• Cross-Site Scripting (XSS): Discover how to hijack user sessions by injecting malicious scripts, and how to sanitize your output to prevent it.

• Cross-Site Request Forgery (CSRF): See how to make a user's browser perform unauthorized actions and implement the essential tokens to block these requests.

• Compromising Authentication: Master the techniques hackers use to crack logins (like brute-force attacks) and learn how to build a robust login system with hashing, salting, and multi-factor authentication.

• Session Hijacking: Understand how attackers steal user sessions and the critical cookie attributes (HttpOnly, Secure, SameSite) that lock them down.

• Information Leaks: Find out what your extension is accidentally revealing about its tech stack and how to silence these leaks for good.

• XML Attacks: Uncover how malicious XML payloads can crash your server or steal files, and how to configure your parser to be bulletproof.

• Denial-of-Service (DoS) Attacks: See how a simple script can take your service offline and architect your backend to be resilient against traffic floods.

Who is this book for?

• Browser Extension Developers who want to protect their users and their reputation.

• Self-Employed Coders & Freelancers who need to deliver secure applications to their clients.

• Hacking Newbies curious about web security, looking for a practical, project-based starting point.

• Any developer who knows that "I'll add security later" is the most dangerous line in programming.

No prior security knowledge required. This book breaks down complex attacks into simple, step-by-step instructions, showing you both the "how" and the "how to defend."

Don't wait for a security breach to become a security expert.