"For cybercriminals, cloud computing is merely another technology to abuse," says this prediction from The Star on 2013 computing trends. Stolen and pirated data can be stored on legitimate sites like Dropbox and Google Drive. That's something that should concern all of us - let's remember that a large amount of the data on Megaupload.com was perfectly legal, but that didn't stop the US Government going after them and closing it down in the pursuit of pirates.
It's not something you want to think about, but what would happen if your cloud provider turned out to be a haven for pirates and was shut down? Is an organization the size of Google immune to prosecution, or are they, too, vulnerable?