Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.
Comment: added alternate text to image

Overview

Excerpt

...

Files may be securely deleted using File Shredder. File Shredder is free desktop application available on Windows for shredding (destroying) unwanted files beyond recovery. On Mac computers, files may be securely deleted using a feature built into the OS.

Simply deleting files doesn't prevent hackers from recovering those files.  In many instances, if you want a file to be unrecoverable, then that file needs to be completely erased. 

Why should you securely delete/shred information?

When files are deleted using the common "delete" operation, information is only removed from files, so they can't be found by the operating system. File recovery software can be used to recover this information by taking advantage of shortcomings in the standard delete operation. A program capable of overwriting the file data with random binary must be used in order to remove files permanently from your system

Why should you shred information?

There are quite a few software tools today for retrieval of deleted files. Those tools, often referred to as "file recovery" software, are taking advantage of shortcoming the "delete" command that we all use regularly to delete files. Actually, the "delete" operation only removes bits of information from files so they appear deleted in OS. It is easy to retrieve those files using aforementioned specialized file recovery software. In order to remove, or shred files permanently from your system you have to use a program that is capable of rewriting the files with random series of binary data multiple times. This process is often called shredding. That way, the actual content of the file has been overwritten and the possibilities to recover such a shredded file are mostly theoretical. 

What should be shredded?

Any information Files that you need to be completely deleted beyond recovery should be shredded. Before shredding a file, please ensure that you are not violating any State Records Laws or Sunshine Laws. Any information that needs to be maintained for Public Record should NOT be shredded (e.g., a student's proof of residency, student records, payment receipts, etc.). However, any files that may contain confidential information that are not public record should be shredded if they are no longer needed (e.g., an Excel document used to move Social Security Numbers from one location to another that will not be used again).

For more information, please see the University Policy FIN 3.02-2.14 and the Records Management Overview.

 

How to shred files

...

titleShredding Files on Windows

File Shredder has been developed as fast, safe, and reliable tool to shred company files. The author of this program released it free under GNU licence. You are welcome to download File Shredder and use it without any restrictions. File Shredder is a simple, but powerful program that surpasses many commercial file shredders out there.

UWF employees should use Spirion to shred files.

For any other users,

  • Windows doesn't come with an option to shred files.  Windows users might consider downloading BleachBit.  This program is a reliable, free and open-source tool that can be used to shred files. It is available for free under version 3 of the GNU General Public License.  Please know that users download this program at their own risk.
  • Apple computers come with an option to shred files.  See the link below for additional details

...

  • .


...

Expand
titleShredding Files on MacOS

The ability to securely delete files is built into the OS on Macs. To securely delete a file, first add :

  1. Add the file to the Trash Bin.
Instead of just emptying the trash, choose Finder >
  1.  
  2. Choose Finder from the menu bar.
  3. Click "Secure Empty Trash..." When you do this, not only is the file removed from the Mac’s directory, but the hard drive space it occupied is overwritten with
junk.

FAQs

Expand
titleEnter question here

Enter answer here

  1. random binary digits.

'Secure Empty Trash' optionImage Added

You may also adjust your settings so that files are removed securely each time you empty the trash. To adjust this setting:

  1. Click Finder from the Menu Bar.
  2. Select Preferences.
  3. Click Advanced. 
  4. Check the box to "Empty Trash securely."

Finder Preferences windowImage Added



Include Page
ILP:_Help Desk Footer
ILP:_Help Desk Footer