Business and governmental organizations, especially in the financial industry, have increasingly been concerned with mobile apps that can be used to transmit sensitive financial information.
The following TIs directly address apps that use email and/or SMS:
Allows Sending Email
Sends SMS Messaging
While some of the obvious email or SMS apps can be monitored or blacklisted, some other apps may have the ability to transmit information in a less obvious manner. Such apps may use 3rd party SDK services to send data from the device to other destinations.
Appthority MTT Researchers have released a few Informational TIs that determine whether an app contains SDK services that can transmit data. These include:
Uses Kakao API
Uses Signal SDK
Uses Twilio API
Apps may use these services to send or receive text, voice, or other media to or from the device.