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# Administrating the Machine/Protecting Documents (Security Functions)

You can prevent information leakage by managing the machine and protecting documents.

- You can protect documents from unauthorized access and stop them from being copied without permission.

- You can control the use of the machine, as well as prevent machine settings from being changed without authorization.

- By setting passwords, you can prevent unauthorized access via the network.

- You can erase the data on the hard disk to prevent the information from leaking out.

- You can limit the volume of the usage of the machine for each user.

- See Security Reference.