Once you know its path, referencing files inside it is as simple as referencing files inside any other directory. To determine the absolute path of your app's internal storage directory, it is recommended that you use the getFilesDir() method. ![]() Therefore, it is a best place to store all the sensitive data of your app in the internal storage directory. This means the files cannot be accessed by any other app on the device. Files inside this directory are very secure because they use the MODE_PRIVATE file creation mode by default. Use Internal Storage for Sensitive DataĮvery Android app has an internal storage directory associated with it whose path is based on the package name of the app. If you are developing a more complex app, however, it is your responsibility to make it secure and protect the privacy of your users. In this article, I'm going to list some of the best practices you can follow to build a secure Android app that doesn't leak data or permissions, and is, in general, less vulnerable to malicious apps that might be installed on the user's device. As a result, simple Android apps that don't perform any file system or networking operations can often be considered secure by default. ![]() The Android operating system has lots of built-in security features, such as application sandboxing, protection against buffer and integer overflow attacks, and segregated memory areas for program instructions and data.
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