Kotlin Application Security: A Complete Guide

The book "Kotlin Application Security" is a practical guide for developers who want to create secure applications in Kotlin. In the modern world, vulnerabilities in code can lead to data leaks, financial losses, and loss of reputation. This book will help you avoid common mistakes and implement security best practices at all stages of development.

Who is this book for?

• Android application developers in Kotlin who want to protect user data.
• Backend developers using Kotlin (Ktor, Spring Boot) for server-side solutions.
• Team Leads and architects responsible for codebase security.
• Students and junior developers who want to write secure code from the start.

What you will learn:

• Common vulnerabilities in Kotlin applications: SQL injections, XSS, CSRF, insecure key storage.
• Data encryption methods: symmetric and asymmetric encryption, working with Android Keystore.
• Secure network communication: HTTPS, certificates, protection against Man-in-the-Middle attacks.
• Proper secret storage: tokens, passwords, API keys in mobile and server applications.
• Code auditing: static analysis tools (Detekt, SpotBugs) and manual reviews.
• Protection against reverse engineering: obfuscation, ProGuard, R8, APK integrity checks.
• Multithreading security: race conditions, deadlocks, thread-safe collections.
• OWASP Mobile Top 10 and OWASP Top 10 practices for web applications.

Book features:

• All code examples are written in Kotlin and ready to use.
• Real-world case studies: from a vulnerability in a public API to securing a banking application.
• Step-by-step instructions for setting up CI/CD with security checks.
• Ready-made checklists for pre-release auditing.

After reading the book, you will be able to independently identify and fix vulnerabilities, write code resilient to attacks, and confidently pass security audits. This is not just theory — it is a set of tools you can start using immediately.