RSA recently published this eBook on three tips to secure your cloud. I like the direction the authors took but want to take things a few steps further. Before you can protect anything, you first need to know what infrastructure you actually have running in the cloud. This means doing a cloud census. Yes, you probably know about most of your AWS and Azure instances, but probably not all of them. There are various ways to do this – for example, Google has its Cloud Deployment Manager and Azure has an instance metadata service to track your running virtual machines. Or you can employ a third-party orchestration service to manage instances across different cloud platforms.