Apparently I found the assets i.e. graphics, html etc I used in my compiled iPhone.app file. This yields for a concern for its safety, anyone got something to say about this?
They are not safe at all, you can safely browse application directory using iPhone Explorer on Mac or iFunBox on Windows even the device is not jailbroken. So, leave it as is unless you want to waste some or more CPU time for decrypting those assets when your app starts, which can make it a little more safe*r*