There are currently no plan to develop a built-in instant messager app for Firefox OS, other than the SMS/MMS app.
; How does the security system work? We're curious about the security system as the source of web app can be easily obtained like other web.
Many perspectives of Security concerns are addressed in [https://developer.mozilla.org/en/docs/Mozilla/Firefox_OS/Security official documentation]
; It's easy to open the source level of html5. Can we resolve those security issues with packaging?
For "content protection", not security. If your JS is generated by Emscripten, your original source code is as protected as any platforms that runs byte code. Maybe unrooted phone will protect the app too????? (Packaged apps can still be downloaded from Marketplace and inspected)
; Any alternatives to html5? We need to know whether it's possible to develop native app : which can replace html5 as it is pessimistic at this moment.
Firefox OS native app are HTML5 webapp. Compiled app is not in our roadmap