Swift (iOS/macOS) Application Security: From Vulnerability to Protection

Modern iOS and macOS applications store sensitive user data, process payments, and work with critical information. A single vulnerability in the code can lead to data leaks, financial losses, and a loss of user trust. The book "Swift (iOS/macOS) Application Security" is a practical guide that will teach you how to protect your projects at all stages of development.

What is this book about?

The book covers the full lifecycle of Swift application security: from architecture design to publishing on the App Store. You will learn how to:

• Protect data on the device — proper use of Keychain, encryption with CryptoKit, secure storage of passwords and tokens.
• Prevent network-level attacks — configuring HTTPS, validating SSL certificates, protection against MITM attacks and traffic sniffing.
• Avoid common vulnerabilities — code injection, buffer overflow, attacks via URL schemes, and cross-site scripting in WebView.
• Work with authorization and authentication — secure implementation of Face ID / Touch ID, OAuth 2.0, JWT tokens, and sessions.
• Apply OWASP standards — adapting the Mobile Top 10 for iOS/macOS, penetration testing, and code auditing.

Who is this book for?

• iOS/macOS developers of any level — from Junior to Senior, who want to write secure code.
• Team Leads and Architects responsible for project security and making architectural decisions.
• Students and beginners who want to form good security habits from the start.
• Security engineers transitioning into mobile development or wanting to understand the specifics of the Apple platform.

What will you learn after reading?

• How to configure Code Signing, App Sandbox, and Hardened Runtime for macOS.
• Methods for protecting against reverse engineering: code obfuscation, binary encryption, anti-debugging protection.
• How to use SwiftNIO and the Network framework for secure data transmission.
• Practical examples of vulnerabilities and their fixes (SQLite injections, insecure key storage, weak passwords).
• Tools for security testing: Burp Suite, OWASP ZAP, Frida, objection.

The book is written in simple language, contains many Swift code examples and ready-made solutions that can be immediately applied to your projects. Each chapter ends with a practical assignment to reinforce the material.

Take control of security — protect your users and your reputation as a developer.