Whenever you try to encrypt a file located in an unencrypted
folder, Windows warns you and gives you the option to encrypt the folder as
well (shown in Figure 8-10).
Figure 8-10. Windows displays this warning if you encrypt a file located in an
unencrypted folder
Permissions and Security | 477
Users and
Security
Be especially careful here, as the default is to encrypt the containing
(parent) folder in addition to the selected file, which
can be counterintuitive if you??™re accustomed to warnings that
only deal with child objects. Check the Always encrypt only
the file option if you never want to see this warning again.
If you ever inadvertently encrypt your desktop (by encrypting
an item on your desktop, and then accepting the default
in this box), the only way to unencrypt it is to open Windows
Explorer, and unencrypt the source desktop folder
(usually \Users\{your username}\Desktop).
If an unencrypted file is placed in an encrypted folder, the file will become
encrypted, too. The catch is when one user encrypts a folder and another
user places a file in that folder; in this case, the file is encrypted for the creator
of the file, which means that the owner of the folder, the one who originally
implemented the encryption, will not be able to read the file.
On the other hand, if the user places a file in a folder, and a different user
comes along and encrypts the folder thereafter, only the user who implemented
the encryption will be able to read the file, even though the file is
officially ???owned??? by that first user.
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