In our modern world, more and more of us telecommute — we work from a location other than our office by using a virtual machine. A virtual machine (VM) is just a computer program that allows your computer at home (or at the beach) to use an internet connection to securely connect to the network in your office just like you were there working. Consider that whatever resources you have access to at work, you can also access through your virtual machine.
Say you are in a coffee shop and feel the need to run to the rest room. If you don’t lock your computer, then you may inadvertantly give away every trade secret your company owns. This is why you must secure your VM.