Virtual machines offer CIOs and security researchers a lot. And, unfortunately, hackers too.
Virtualization is the hot new trend in corporate data centers today. Virtualization servers from Microsoft, VMware and XenSource allow many virtual computers to run on a single (real) computer system. In practice, this means that 20 or 30 physical servers in a machine room can be turned into the same number of virtual machines running on a single physical system with two, four or eight processors.
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