如何避免使用xcode下载应用程序数据

I have developed an iPad Application which save user date in both app's Document and Cache folder. Data in the cache folder is highly sensitive. My problem is securing user data. One thing I notice is anyone can plug the iPad to a Mac and use XCode to download .xcappdata file which contains both Document folder and Cache folder. Is there any way to stop this.I have developed an iPad Application which save