How to perform Data Wiping by Permanent
File Deletion Software
When you delete files with sensitive information, you
want them to disappear forever without leaving any trace or being within the
reach of those tools to recover deleted files. Here are some
simple steps you can take to make sure those files were permanently deleted.
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Clicking on the "Delete" icon of a file in most
cases has not really been deleted. Your operating system will simply mark
the space that file was occupying on your storage drive as
"available" again, which means that until something takes its place
the file can be recovered.
And that is why tools are born to permanently delete
files. What they do is replace your file with random data so that not even
the best recovery tool in the world can bring it back. This is similar to
scribbling with a black marker over text that you want to make disappear.
works on traditional hard drives. Modern solid
storage drives (SSDs) and flash memory in mobile devices don't work the same
way, which is because applications don't have the same control over where data
is written.
If you are equipped with an SSD, deleted files are more
difficult to recover once they have passed the Recycle Bin (or Trash,
in Apple's case). Finally, the best option to be really sure
that your files have been deleted forever is to encrypt your storage drive.
With that said, here is our guide to permanently deleting
files.
Permanently delete files in
Windows
If you want to delete a file immediately without going
through the Recycle Bin it is quite simple: just hold down the shift key while
pressing the delete button or the icon in the file explorer.
However, this file could still be recovered by someone
who installs a recovery tool, so on a traditional mechanical hard drive you
will need a specialized tool to make sure that sensitive information has
completely disappeared.
Eraser is a simple but effective tool that has been available
for Windows for many years. Just point it to an entire file or folder and
it will overwrite it with random data to make it impossible to recover. The
tool also allows it to be programmed to "clean" parts of your hard
drive on a regular basis if you wish.
Blank and Secure is a fairly similar tool with a
perhaps more user-friendly interface. It is also portable, which means
that you can take it wherever you want on a USB memory and run it when you need
it.
Once you start the program, you only need to drag the
files you want to get rid of and drop them in the Blank and secure
window. You can program some settings for after deleting the files, such
as turning off the computer (very useful when the cleaning work will be very
long).
Data Wipe - File Eraser Software is used to remove the data
permanently so that no one can recover this data. This software helps you to
ensure security. Data Wipe ensures that file deletion is immutable and beyond
recall.
CCleaner is one of our favorites because in addition to
permanently deleting files it also has other cleaning tools (although you will
have to pay for that option).
The tool is more practical for cleaning entire disks at
once and not individual files, which is usually a better option to get rid of
both files with sensitive information and garbage accumulated on your storage
drive. The tool is especially useful for use in modern SSDs that we talked
about a few lines above. In any case, if you have a solid storage disk, your
best option might be to encrypt it.
BitLocker is included in the “Pro” versions of
Windows 10, or you can use an alternative developed by third parties like VeraCrypt. Some
SSD manufacturers offer their own solutions, so do your research.
Permanently delete files on
macOS
As in Windows, macOS has its own keyboard shortcut to
delete files directly without going through the Trash: by pressing the Option
+ Cmd + Delete keys.
As you have undoubtedly noticed, Macs have been equipped
with SSDs for some years now, which mean that conventional techniques for
securely deleting files are no longer effective. What you should do is
activate FileVault so that the deleted files are very difficult to recover once
they have disappeared from the Trash.
Go to the Security and Privacy section from the System
Preferences menu and access the FileVault tab to make sure it is
active. The downside of using this is that even you will have a hard time
recovering files if you forget your password, but you weren't planning to do
that, right?
In macOS there were more options to delete files safely
but all were abandoned as of the new version, Sierra .
You will probably find several tools to "safely
delete files" on the Mac App Store, but they are not really effective when
it comes to files stored on SSDs. In the case of a traditional mechanical
hard drive you can use tools like FileShredder or Shredo .
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