This is the official release of the vSphere 5.0 Security Hardening Guide, v1.0. The format of this guide has changed from previous versions. The guide is being released as a Excel spreadsheet only. The guideline metadata from earlier guides has been greatly expanded and standardized. CLI commands for assessment and remediation of the guidelines is included for the vCLI, ESXi Shell, and PowerCLI. For additional information, please see the Intro tab of the spreadsheet.
You can download the guide here.