Having worked at a bank that was moving some workloads to the cloud, I don't think I'm underestimating the security practices of companies that consider their c

Having worked at a bank that was moving some workloads to the cloud, I don't think I'm underestimating the security practices of companies that consider their company data to be valuable. In the application I was working on, they had over a TB of data, broken up into 32MB blocks, each with a unique key that had to be unwrapped by the HSM. If you stole the VM you'd get only a few blocks of readable data with it. I assume that if Walmart values this data, they'll take similar precautions in the cloud.