|Welcome' to the insecure world of
file deletion! If you have confidential data and
you want to destroy it beyond recovery to prevent
hackers or unauthorized people from restoring it,
the worse thing you can do is to delete it using
the operating system (Windows). Normal
deletion is not secure. Why? Because when you
delete a file, the operating system does not
destroy the file contents from the disk - it only
deletes some references on the file
from some system tables. The file contents
remains on disk until another file
happens to overwrite it. Any software
recovery tool can restore the data if it
hasnt been overwritten yet. Hardware
recovery tools may even restore overwritten files
by analyzing latent magnetic traces.
Problem No 1:
Lets suppose you have a file that contains
sensitive information and you want to get rid of
it. You cant delete it because its contents
will remain on disk, becoming an easy target for
any hacker with a simple disk tool utility.
No 2: The file slack is usually
filled with random information that comes from
your computer. The information can be a listing
of a directory, a part of a password file or
other sensitive data from your computer.
Unfortunately, any hacker with a simple disk tool
utility can restore it.
No 3: The free space on disk
usually contains the contents of the files that
were previously deleted using standard operating
system commands. Some of them were temporary
files used by applications; these temporary files
were created and deleted without your knowledge.
Lets also take into account the Windows
Swap file, the system file used for the virtual
memory support. The size of this file changes
dynamically, and it can temporarily store the
parts of files or other information. You see now
that the disk free (empty) space is not at all
empty: it may contain passwords,
financial records, personal files, etc. In short,
it contains sensitive data that can be restored
using any disk tool utility.
||Eraser is THE solution to these
problems. Its main task is to protect your
privacy and prevent sensitive data from falling
into the wrong hands. Its main task is to destroy
data beyond recovery.
Eraser introduces a verb with a new
meaning. To erase a file
doesnt mean anymore just to delete some
'reference' on the file from some system tables
and to leave the file sensitive contents lying
around on disk waiting for a disk tool utility to
recover it. To erase means now
three things at the same time: means wiping
(overwriting) the file contents to make sure
its gone and cannot be recovered; means scrambling
the file properties (name and dates) in order to
remove any clue that might reveal the identity of
the erased file; means deleting
the file thus removing it form disk (as a normal
delete would do).
is obviously a very, very useful feature. It is
the only way to destroy beyond recovery the most
important part of a file: its contents. Eraser
offers you full control over its wiping features.
You can choose between over six standard wipe
methods (normal, against hardware recovery tools,
etc.) or you can create your own wipe methods.
Eraser can overwrite the file contents with
fixed, text or random patterns (you can overwrite
sensitive data with something like Censored
by Me!, with zeroes or other fixed patterns
or with random letters or digits, etc.)
(destroying) the file properties (especially the
name) is also a very useful feature. The
Here I kept my passwords folder or
the My love affair with Lady X Log
file will be renamed to randomly generated names
such as F34D2108. Who would guess what the
file/folder used to contain? The file dates will
be set to 1/1/1980 00:00:00. Indeed all the clues
that might reveal the identity of the erased file
are now gone.
the file size to zero and deleting
it simply completes the erase task. The file is
now GONE FOREVER!