"The bigger and more popular you are, the more attacks you are going to receive"

--Anonymous

One of the most popular mobile operating system is iOS. Currently, there are millions of iOS apps with billions of downloads. Along with popularity, there are many insecurities introduced in iOS applications. These insecurities make the user himself a threat. We will cover all the important aspects of iOS application security. We will start from basic iOS app development concepts and then move towards the concepts related to the iOS application security.

In this chapter, we will look at the following topics:

• Basics of iOS and app development
• Developing and deploying iOS apps
• The iOS security model
• The iOS security architecture
• The iOS secure boot chain
• The iOS application signing
• The iOS application sandboxing
• OWASP Top 10 Mobile Risks