As organizations begin to install Open Systems operating systems and programs on their personal computers, the limitations of those platforms must be recognized and handled appropriately. Password protection of the machine is absent or not enabled. There is no built-in support for sharing a single machine between multiple users.
Every program has unlimited access to all the hardware, and by extension, all the software.
Any program can read or write any area of memory. There is little or no protection against the inadvertent or intentional modification or deletion of files. Fortunately, most Open Systems operating systems provide the needed safeguards.