First of all, if you're under 36k, you should be covered by the 3yr/36k warranty and ford should be willing to at least repaint it. For some, they replace the hood (don't ask me how they decide). For others, they tell you to get lost and hope you don't fight them on it. Legally, they are responsible to fix the problem because this is not due to poor care, this is a defective part.
Your hood is aluminum. The problem you are seeing is galvanic corrosion, it's like rust but not like rust on steel. When aluminum rusts, it gets a white chalky covering, and this covering actually ends up protecting the aluminum, which is why it takes aluminum a lot longer to corrode than it does for steel. That's great, right? Not really if you have paint on your aluminum, because the corrosion will make the paint bubble and come off, which is what is happening on your car.
So why is it corroding? It's not because your previous owner didn't take care of the car - keep in mind your car is only one year old. It's happening because the aluminum metal was corrupted by iron particles during the production process. Ford has known about this since around 2000 and put out a TSB about it in the mid 00's. Yet here we are with 2014s having the same issue, which means Ford hasn't done anything to correct the situation.
It's clear that their strategy is, it would be more expensive for them to fix the problem than it is for them to simply dodge the problem. So they've chosen to dodge it. Mostly, they hope that the problem doesn't show up, or get noticed by owners, until after the 3yr/36k mi warranty is up, then they can tell that owner to get lost, which is exactly what they do. If it happens during the warranty period, they do a cheap touch up job and wait until the warranty is over, and then when the corrosion comes back (and it usually does because the iron corruption which causes the corrosion is usually in the seams and cant be reached, will continually cause these corrupted hoods to corrode regardless of anything you do) they can tell the owner 'no warranty, no helpy'.
It's absolutely despicable how Ford has behaved about this issue. Lodge as many complaints as you can but it's clear Ford simply doesn't care about loyal mustang enthusiasts. Also, while your at it, check your trunk lid along the seams, you might find another unhappy surprise there.
In the long run, if Ford loses enough customers over pathetic build quality and even worse customer service, maybe then they will care about issues like these.