Protecting software and system integrity

You have gained a solid foundation for implementing the most common security controls in iOS app development. You can now finish up your skill set by learning how to maintain application and device integrity.


  • Logging, part 3 Video — 00:08:21
    • In this segment, we learn about Apple’s new Unified Logging System and how to implement it in Swift.

  • Logging Video — 00:06:52
    • In this segment, we learn about basic logging in Swift.

  • Error handling Video — 00:11:08
    • In this segment, we examine error handling in Swift, including using the throws keywork, do … catch and try.

  • Understanding risks associated with external code Video — 00:07:07
    • In this segment, we discuss the realities, pros and the cons of using third-party code in our app.

  • Secure iOS coding roundup Video — 00:09:27
    • In this segment, we review the key points of all that we have learned in this path.

  • Jailbreak detection Video — 00:12:53
    • In this segment, we learn various ways to detect if your app is installed on a jailbroken device.

  • New vulnerability research Video — 00:07:06
    • In this segment, we see how to continue our vulnerability research online.vvvvv

  • Logging, part 2 Video — 00:06:32
    • In this segment, we learn how to use NSLog in Swift to log errors.

  • Activity: Handling errors Video — 00:14:32
    • In this activity, we incorporate error handling in Swift, learning how to manage unexpected conditions in our code.

  • Activity: Working with external code Video — 00:06:45
    • In this activity, we make a call to a third-party function in Swift.

  • Conclusion Video — 00:00:32
    • In this segment, we wrap up and say farewell.

  • Activity: Detecting a jailbroken device Video — 00:03:57
    • In this activity, we use our app to test if the device is jailbroken.

  • Testing types Video — 00:14:43
    • In this segment, we learn about the various testing types and when to use each one as you develop your app.


Course description

No study of secure application development would be complete without also understanding how to monitor your code and the platform it runs on. In this final course, you will consider the risks of integrating code you did not write into your app. You will learn how to handle and log errors generated within your app. You will also learn about the many types of tests your app should go through before it is released to users. You will see the risks of running your app on a jailbroken device, and how your app can detect if it has been installed on such a device. You will also learn where to go to continue your security education, and finish up with a review of key points from this path.

Meet the author

Chrys Thorsen is a technology and education consultant with 25 years of experience. Her work has taken her around the U.S. and overseas, including as a contractor for the CDC using technology to help fight HIV/AIDS in Africa.

During her career, she has acquired 40 IT certifications, authored over 25 textbooks on a wide range of IT subjects, including secure iOS and Android coding, and created an equal number of IT-related video courses. When not working, Chrys enjoys reading scientific articles and experimenting with Internet-of-Things devices. She currently lives in Virginia with her sister, her cat and her dog which, as she describes it, “have the worst sibling rivalry imaginable.”

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We use Infosec Skills to provide continuous training to our technicians and to prepare them for various certifications. Infosec Skills allows us to create personalized training programs that focus on each of our technicians’ particular roles and see their progress as they take courses. We also, recommend it to clients to make their IT support teams better.

Caleb Yankus


This has been utilized to bridge the skills gap across our cyber team and to aid them as they prepare for their various certifications. It also has provided a nice learning foundation for our various cyber team members to utilize as we continue to find ways for cross-utilization with operations while minimizing the downtime needed to ensure everyone’s knowledge is the same.

Daniel Simpson


We use Infosec Skills to provide base level knowledge for employees. We also use the services to provide in depth learning for employees as they encounter new technologies. If an employee is is assigned to a new project, we can rely on Infosec Skills to provide a rapid concentrated learning environment. This rapid concentrated learning positions our employees for success.

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