How iOS prevent app from stealing files saved in google drive?

Question

Apple's Files app treats google drive as a folder and operates files saved in google drive in the same ways as local files saved on the phone. See "Use the Files app on your iPhone, iPad, and iPod touch" .

It is convenient, eg, if want to send a file saved in google drive to a friend via iMessage, just browse into the google drive, select file and send. I sent files via another applications also.

Now the question comes: what if an app on the phone wants to steal files saved in my google drive ?

I think this concern is common, as I trust google drive before because it has two-steps verification, I save some personal files in google drive. But now if I install google drive on my iphone, together with some other social communicators, it looks like the files in google drive can be easily get accessed by them. I don't feel safe anymore. There is a lot of discussion .

How does iOS prevent bad app from stealing files saved in google drive, or DropBox?

Answer 1

Apps cannot simply access Google Drive. They must do so through a UIDocumentPickerViewController which requires user interaction