Preventing Information Leaks
36
2
❖ Methods of Erasing the Data
You can select the method of erasing the data from the following:
The default is “NSA”.
*1
National Security Agency
*2
Department of Defense
Reference
For details, see the manual supplied with the DataOverwriteSecurity unit.
“Auto Erase Memory Setting”
This can be specified by the machine administrator.
A document scanned in Copier, Fax, or Scanner mode, or print data sent from a
printer driver is temporarily stored on the machine's hard disk.
Even after the job is completed, it remains in the hard disk as temporary data.
Auto Erase Memory erases the temporary data on the hard disk by writing over
it.
Overwriting starts automatically once the job is completed.
The Copier, Fax, and Printer functions take priority over the Auto Erase Memory
function. If a copy, fax or print job is in progress, overwriting will only be done
after the job is completed.
Preparation
For details about logging on and logging off with administrator authentica-
tion, see p.106 “Logging on Using Administrator Authentication”, p.107
“Logging off Using Administrator Authentication”.
A Press the {User Tools/Counter} key.
B Press [System Settings].
NSA
*1
Overwrites the data on the hard disk twice
with random numbers and once with zeros.
DoD
*2
Overwrites the data with a number, its com-
plement, and random numbers, and then
checks the result.
Random Numbers Overwrites the data with random numbers
the specified number of times.
You can specify between 1 and 9 as the
number of times the data is overwritten with
random numbers. The default is 3 times.
To Next Page
Loading...
Need help?
General
