Overview
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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?
There are many software tools for the retrieval of deleted files. Those tools, often referred to as "file recovery" software, are taking advantage of shortcoming in 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 can be 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 timesWhen 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. This process is often called shredding. Using this method, the actual data in the file will be overwritten.
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
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| title | Shredding Files on Windows |
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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
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The ability to securely delete files is built into the OS on Macs. To securely delete a file, first add :
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FAQs
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You may also adjust your settings so that files are removed securely each time you empty the trash. To adjust this setting:
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