1. A virtual machine for processing digital data, in particular medical data, by executing a digital data processing application program, in particular a medical data processing application program, the virtual machine being a simulation of a computer, a) the virtual machine comprising a volatile memory configured to comprise a storage space for temporary data for temporarily storing the digital data; b) the virtual machine being configured to be accessed by any virtual machine user activated on a virtual machine user list, wherein any activated maintenance virtual machine user is denied any permission regarding the storage space for temporary data, wherein denying any permissions is performed by logging into the virtual machine as an administrator and setting corresponding options; c) wherein any administrator has been deactivated on the virtual machine user list, wherein deactivating any administrator has been performed by logging into the virtual machine as an administrator and setting corresponding options for each administrator in the virtual machine user list; d) wherein the virtual machine is in a state in which the administrator has been logged off after deactivating the administrator on the virtual machine user list.