Information Technology Reference
In-Depth Information
privacy and security requirements for storage. Typically, for example, the stor-
age volume must not be available on any network. Other requirements may be
that the data must be backed up and stored for a mandated length of time.
When data are stored on a computer, the owner must ensure that access per-
missions are appropriate for the degree of privacy required of the data. At a
minimum, data should be in a password-protected account and not readable by
other accounts. More stringent protection is provided by encryption of the
data. Some of these points were discussed in Chapter 3.
Tips 'n Tricks
How to encrypt a file in Windows
(Users must be using Windows NT, Windows 2000, Windows XP, Windows
Server 2003, and Windows Vista.)
You can encrypt files only on volumes that are formatted with the NTFS file
system. To encrypt a file:
1. Click Start , point to All Programs , point to Accessories and then click
Windows Explorer .
2. Locate the file that you want, right-click the file, and then click
Properties .
3. On the General tab, click Advanced .
4. Under Compress or Encrypt attributes , select the Encrypt contents
to secure data check box, and then click OK .
5. If
the
file
is
located
in
an
unencrypted
folder,
you
receive
an
Encryption Warning dialog box. Use one of the following steps:
If you want to encrypt only the file, click Encrypt the file only , and
then click OK .
If you want to encrypt the file and the folder in which it is located,
click Encrypt the file and the parent folder , and then click OK .
Another user attempting to open an encrypted file cannot do so. For exam-
ple, if another user attempts to open an encrypted Microsoft Word docu-
ment, that user receives a message similar to:
Word cannot open the document: username does not have access privileges
( drive :\ filename .doc)
If another user attempts to copy or move an encrypted document to another
location on the hard disk, the following message appears:
Error Copying File or Folder
Cannot copy filename : Access is denied.
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