I'm trying to find out, what kind of security aspects I have to fear, when developing a J2me business application.

Is there a way to access a recordstore with a c++ or another J2me program?
Is it possible to read out the recordstore in any way other than form my j2me app?
Can J2me applications be substituted by another J2me Application (with same name, ...)?
Do you know anything else I should keep in mind when developing?

Thanks a lot for your help!