Not exactly, It is more common to ifile on android devices. since you don't even have to root it or anything. No idea if it is possible to ifile from PC. But if you removed the check box option on mobile devices for it to save files to your device, It would then become extremely more difficult to do. Infact i can't even name a way they could get the file on mobile since mobile devices are more limited to what they can do. Might be possible through some PC method not 100% sure, But removing the ability to save them doesn't hurt anything really. The only argument i seen against it is data, But i personally have played graal on data for months without even checking the box, It isn't really data consuming at all