As with any tool as versatile as Windows PowerShell, there are bound to be some security concerns. Security, however, was one of the design goals in the development of Windows PowerShell.
When you launch Windows PowerShell, it opens in your Documents folder; this ensures you are in a directory where you will have permission to perform certain actions and activities. This is far safer than opening at the root of the drive, or even opening in system root.
To change to a directory in the Windows PowerShell console, you cannot automatically go up to the next level; you must explicitly name the destination of the change-directory operation (although you can use the cd .. command to move up one level).
The running ...