Overwriting the Data on the Hard Disk
To prevent data leaks, you can set the machine to automatically overwrite temporary data. We
recommend that before disposing of the machine, you overwrite all the data on the hard disk.
To overwrite the hard disk data, the optional DataOverwriteSecurity Unit is required. For details about
overwriting the data on the hard disk, see "Deleting Data on the Hard Disk".
• p.91 "Preventing Unauthorized Copying"
• p.94 "Printing with Unauthorized Copy Prevention and Data Security for Copying"
• p.92 "Data Security for Copying"
• p.97 "Printing a Confidential Document"
• p.103 "Specifying Access Permission for Stored Files"
• p.115 "Preventing Data Leaks Due to Unauthorized Transmission"
• p.117 "Using S/MIME to Protect Email Transmission"
• p.125 "Protecting the Address Book"
• p.152 "Managing Log Files"
• p.129 "Encrypting Data on the Hard Disk"
• p.135 "Deleting Data on the Hard Disk"
Limiting and Controlling Access
Preventing Modification or Deletion of Stored Data
You can allow selected users to access stored scan files and files stored in Document Server.
You can permit selected users who are allowed to access stored files to modify or delete the files. For
details about limiting and controlling access, see "Specifying Access Permission for Stored Files".
Preventing Modification of Machine Settings
The machine settings that can be modified depend on the type of administrator account.
Register the administrators so that users cannot change the administrator settings. For details about
preventing modification of machine settings, see "Preventing Modification of Machine Settings".
Limiting Available Functions
To prevent unauthorized operation, you can specify who is allowed to access each of the machine's
functions. For details about limiting available functions for users and groups, see "Limiting Available
Functions".
• p.103 "Specifying Access Permission for Stored Files"
• p.143 "Preventing Modification of Machine Settings"
1. Getting Started
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