Android: Room: no encryption and security?

SQLCipher for Android now directly supports Room. You can find the documentation here

Consequently, @CommonsWare will not be actively developing cwac-saferoom any longer and recommends using SQLCipher's support

Room by default store data in the app's internal storage which any root user can access.

if you need some security you need to use encryption lib like this cwac-saferoom.