Eliminating security holes in iOS apps is critical for any developer who wants to protect their users from threats. In iOS Application Security, mobile security expert David Thiel reveals common iOS coding mistakes that create serious security problems and shows you how to find and fix them. After a crash course on iOS application structure and Objective-C design patterns, you'll move on to spotting bad code and plugging the holes. You'll learn about the iOS security model and the limits of its built-in protections, the myriad ways sensitive data can leak into places it shouldn't, such as through the pasteboard, how to implement encryption with the Keychain, the Data Protection API, and CommonCrypto, legacy flaws from C that still cause problems in modern iOS applications, and privacy issues related to gathering user data and how to mitigate potential pitfalls. Don't let your app's security be compromised.