How the Disk Doctors Data Sanitizer works...
When sensitive data is no longer needed on a computer it must be protected by making sure it can never be recovered. Businesses involved in security applications must know with 100% certainty that that information is no longer available to anyone. Security Software specialists Disk Doctors have developed an easy to use data eraser program that guarantees that security. The Disk Doctors Data Eraser works not only by unlinking files but also by specifically overwriting them with gibberish data. For very high security installations, overwriting the file several times is advised. Most government sectors have specific disk wipe standards for file deletion. Particularly, the U.S. DOD specification 5220.22 standard says a file must be overwritten three times.
A Disk Wipe Overview
Disk erasing or sanitizing is beneficial for privacy, because files are not completely deleted when using an operating system's default delete function. In most of the file systems, the delete function consists of marking the space occupied by the file as free and updating file system allocation structures, leaving actual file contents intact on the storage media.
If there is continuous flow of read and write operations on the drive after this deletion, eventually this space will be assigned to other files and will be overwritten. However, if the those segments of the computer hard drive are not read and written upon often the data may remain intact and at risk for years. Data recovery software or disk forensic tools can easily mine the data from the drive.
Form this we can understand that the normal 'delete' command or deleting data from the recycle - bin is not a safe method for data removal.
To securely erase data we need to follow certain patterns or standards for disk sanitization, the patterns used for overwriting are mentioned below and are available to effectively remove magnetic remnants from the hard drive.
Disk Doctors Data Sanitizer is a powerful Data Eraser Utility designed eliminates data file(s) in different directories with a stroke of a key shredding sensitive data beyond recovery.
Disk Doctors Data Eraser offers 9 sanitization standards for disk wiping, and they are:
- Fast Zero Overwrite
- Random Overwrite
- US Navy, NAVSO P-5239-26 – RLL
- US Department of Defense (DOD 5220.22-M)
- DOD Standard 5220.28 STD
- North Atlantic Treaty Organization - NATO standard
- Peter Gutmann Secure Deletion
- US Department of Defense (DoD 5220.22-M) + Gutmann Method
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