Hardening the hypervisor should really be viewed as a standard practice, much as it should be for enterprise servers of any importance.
There are an incredible number of configuration options for the major platforms (ESXi, Hyper-V, and XenServer).
This extract identifies the most fundamental principles, getting you to a sound security state that conforms to industry best practices.
This is an extract from the book:
Virtualization Security: Protecting Virtualized Environments
By Dave Shackleford
Published by Wiley
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