"Charlie's in Romania studying dragons, and Bill's in Africa doing something for Gringotts[bank]," said Ron. "Did you hear about Gringotts? It's been all over the Daily Prophet, but I don't suppose you get that with the Muggles - someone tried to rob a high security vault."
(Harry Potter and the Sorcerer's Stone)
What’s the referent for that? I’m puzzling whether it is for the newspaper (Daily Prophet), or the news about Gringotts bank.