Android Question Protect private data saved in the internal storage of the android application

Hi, every body
I know, the internal storage of the application is private memory, which users cannot reach, edit or copy
So, may i store my security data here ?
But, some root access permission users can reach, edit or copy private data in this internal storage
Could you please help me, how to store my security private data in android application, which any users cannot reach, edit or copy
Thank you very much !