Abstract
Android's permission system follows an "all or nothing" approach when installing an application. The end user has no way to know how the permissions are actually used by the application, and how the sensitive data flows during its execution. With this work we present OASIS (Operational Access Sandboxes for Information Security), a trusted component that allows developers to execute operations on sensitive data while keeping that data confidential. OASIS allows the end user to have full control over the data available to applications, and also grants policy based regulation of sensitive data flows. Moreover, our system can be deployed via a simple application installation, and does not require any modification to the stock Android OS.
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