Oracle Fusion Expense App Security Whitepaper

I am keen on implementing the fusion expenses app but I need more information on the security features.
e.g., is data encrypted? what type of encryption?, what admin controls do we have over apps on personal devices such as biometrics?
I am hoping to find a complete document that details all security features such as a whitepaper. The "How can I enable the Oracle Fusion Expenses mobile application on a mobile device" section in the "Using Expenses" help centre document is no way near sufficient for firms to fully understand the expense app.

Please can someone direct me to this type of information?