Blur Application Screens for Mobile User Privacy in iOS Apps

Last updated January 30, 2024 by Appdome

Learn to Blur Application Screen in iOS apps, in mobile CI/CD with a Data-Driven DevSecOps™ build system.

Which Application Types are Susceptible to Data Loss?

The Blur Screen feature is meant for preventing malicious actors from obtaining sensitive data by means of taking screenshots or performing screen recordings. This feature is mainly used for protecting applications that contain data such as banking and financial apps or apps that contain confidential medical information. Sensitive application data – especially data cached in the background – can be leaked outside the app itself.

How does Appdome Implement the Blurring of Application Screen?

Blurring mobile app screens is an important part of Appdome’s app mobile privacy strategy, preventing loss of data using data loss prevention (DLP). Appdome Blur Application Screen blurs application preview screen when it is minimized to prevent sensitive data from being visible outside the app.

Prerequisites for Using Blur Application Screen:

To use Appdome’s mobile app security build system to Blur Application Screen , you’ll need:

Blur Application Screen on iOS apps using Appdome

On Appdome, follow these 3 simple steps to create self-defending iOS Apps that Blur Application Screen without an SDK or gateway:

  1. Upload the Mobile App to Appdome.

    1. Upload an app to Appdome’s Mobile App Security Build System

    2. Upload Method: Appdome Console or DEV-API
    3. iOS Formats: .ipa
    4. Blur Application Screen Compatible With: Obj-C, C+, Java, Swift, Flutter, React Native, Unity, Xamarin, Cordova and more
  2. Build the feature: Blur Application Screen.

    1. Building Blur Application Screen by using Appdome’s DEV-API:

      1. Create and name the Fusion Set (security template) that will contain the Blur Application Screen feature as shown below:
      2. fusion set that contains Blur Application Screen

        Figure 1: Fusion Set that will contain the Blur Application Screen feature
        Note: Naming the Fusion Set to correspond to the protection(s) selected is for illustration purposes only (not required).

      3. Follow the steps in Sections 2.2.1-2.2.2 of this article, Building the Blur Application Screen feature via Appdome Console, to add the Blur Application Screen feature to this Fusion Set.

      4. Open the Fusion Set Detail Summary by clicking the “...” symbol on the far-right corner of the Fusion Set, as shown in Figure 1 above, and get the Fusion Set ID from the Fusion Set Detail Summary (as shown below): fusion Set Detail Summary image

        Figure 2: Fusion Set Detail Summary
        Note: Annotating the Fusion Set to identify the protection(s) selected is optional only (not mandatory).

      5. Follow the instructions below to use the Fusion Set ID inside any standard mobile DevOps or CI/CD toolkit like Bitrise, App Center, Jenkins, Travis, Team City, Cirlce CI or other system:
        1. Build an API for the app – for instructions, see the tasks under Appdome API Reference Guide
        2. Look for sample APIs in Appdome’s GitHub Repository
    2. Building the Blur Application Screen feature via Appdome Console

      To build the Blur Application Screen protection by using Appdome Console, follow the instructions below.

      1. Where: Inside the Appdome Console, go to Build > Security Tab > Mobile Privacy section
      2. How: Toggle (turn ON) Blur Application Screen, as shown below.
        If needed, Customize the Threat Notification to be displayed to the mobile end-user in a standard OS dialog notification when Appdome Blurs Application Screen. Blur Application Screen option

        Figure 3: Blur Application Screen option
        Note: The App Compromise Notification contains an easy to follow default remediation path for the mobile app end user. You can customize this message as required to achieve brand specific support, workflow or other messaging.

      3. When you select the Blur Application Screen you'll notice that your Fusion Set you created in step 2.1.1 now bears the icon of the protection category that contains Blur Application Screen

        Fusion Set applied Blur Application Screen

        Figure 4: Fusion Set that displays the newly added Blur Application Screen protection

      4. Click Build My App at the bottom of the Build Workflow (shown in Figure 3).
    Congratulations!  The Blur Application Screen protection is now added to the mobile app
  3. Certify the Blur Application Screen feature in iOS Apps.

    After building Blur Application Screen, Appdome generates a Certified Secure™ certificate to guarantee that the Blur Application Screen protection has been added and is protecting the app. To verify that the Blur Application Screen protection has been added to the mobile app, locate the protection in the Certified Secure™ certificate as shown below: Blur Application Screen shown in Certificate secure

    Figure 5: Certified Secure™ certificate

    Each Certified Secure™ certificate provides DevOps and DevSecOps organizations the entire workflow summary, audit trail of each build, and proof of protection that Blur Application Screen has been added to each iOS app. Certified Secure provides instant and in-line DevSecOps compliance certification that Blur Application Screen and other mobile app security features are in each build of the mobile app

Using Appdome, there are no development or coding prerequisites to build secured iOS Apps by using Blur Application Screen. There is no SDK and no library to code or implement in the app and no gateway to deploy in your network. All protections are built into each app and the resulting app is self-defending and self-protecting.

Releasing and Publishing Mobile Apps with Blur Application Screen

After successfully securing your app by using Appdome, there are several available options to complete your project, depending on your app lifecycle or workflow. These include:

Related Articles:

If you have any questions, please send them our way at or via the chat window on the Appdome platform.

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