JavaScript (Node.js) Application Security

Modern web development with JavaScript and Node.js is unthinkable without a deep understanding of security issues. The book "JavaScript (Node.js) Application Security" is a practical guide that will help you turn vulnerable code into a secure product ready for real-world deployment.

The author, Alexey Voronov — an experienced developer and information security specialist — step by step examines the most critical threats faced by Node.js applications. You will learn how attacks work and, more importantly, how to defend against them.

What you will learn from this book:

• OWASP Top 10 vulnerabilities as applied to Node.js: XSS, SQL injections, CSRF, insecure deserialization, and others.
• Secure database operations: preventing injections, proper use of ORM and parameterized queries.
• Authentication and session management: JWT, OAuth2, bcrypt, protection against token interception.
• API protection: rate limiting, input validation, CORS, secure error handling.
• Encryption and secrets management: password storage, key management, using environment variables.
• Dependency security: auditing npm packages, working with Snyk and npm audit, updating vulnerable libraries.
• Secure deployment: server configuration, HTTPS, helmet, containerization with Docker.

Who this book is for:

• Backend and fullstack developers using Node.js.
• DevOps engineers responsible for secure infrastructure.
• Students and beginners who want to write secure code from their first projects.
• Anyone who wants to move from "it just works" to "it works securely."

The book contains numerous real code examples, checklists, and practical exercises. You will be able to immediately apply the knowledge gained in your own projects. Special attention is given to typical mistakes that even experienced developers make, and methods for their automatic detection.

This is not boring theory, but a concentrate of practical experience. After reading, you will be able to conduct security audits of your own code, implement protective mechanisms, and confidently answer client questions about the security of your product.

"JavaScript (Node.js) Application Security" — your reliable shield in the world of web development.