Comment by DrRobinson

I think this is a valid point, though I don't expect the people in the datacenter to know which customer stores data on which disks. There could of course still be someone working there that steals data from all customers and you end up being part of that, but that's probably quite hard and risky for the employee since the datacenters are heavily monitored and access is restricted. As a targeted attack, I'd expect them to need to team up with a different department, which makes the attack even more expensive.