Yes, that's my understanding as well; my other comment was sloppy. I'm unsure what was meant by "hook," though. Is that something you set up with the target process running under a debugger? That much privilege wouldn't be available to apps in an app store, right?
I meant "hook" in the most vague, hand-wavy sense of the word… anything from attaching a debugger at runtime, to modifying the binary so it automatically saves every song on your desktop. Obviously if you did something like the latter, no extra privilege would be needed.
