Get the Whitepaper called Assessing Cloud Node Security. It is the result of research undertaken by Context into the technical risks associated with Cloud computing infrastructure nodes. Context rented a range of Cloud nodes currently offered by the major providers and performed a review of their security, including the limitations imposed by providers on the types of technical security testing allowed to be performed.
You can download it from the following link: https://packetstormsecurity.com/files/download/100010/Context-Assessing_Cloud_Node_Security-Whitepaper.pdf
Source: https://packetstormsecurity.com/files/100010/Assessing-Cloud-Node-Security.html