Virtualization and Cloud Computing
Definition
Virtualization Architecture
Hypervisor
Benefits of Virtualization
Virtualization in Cloud Computing
Xen Virtualization Architecture and the Threat Model
Virtualization Security Requirements
Virtualization Security Requirements
Smaller TCB Solution
Domain building
Domain save/restore
Hypervisor Vulnerabilities
NoHype
Roles of the Hypervisor
Removing the Hypervisor
References

Virtualization Security Requirements
A secure run-time environment is the most fundamental

The first two problems already have solutions:
Network interface: Transport layer security (TLS)
Secondary storage: Network file system (NFS)

The security mechanism in the first two rely on a secure run-time environment
All the cryptographic algorithms and security protocols reside in the run-time environment