dfm covers
 
 

Data Destruction for Current Hard Disks

Written by DFM Team

Data Destruction for Current Hard Disks

Destruction Of Original Data Stored On Hard Disk Using Logical Techniques

Unauthorized access to confidential data is a continuous concern of users throughout computing history, due to the value assigned to the data. Data stored on hard drives used on computers always contains data from users, clients, and more. Most users believe the file removal commands completely erase the contents of the device. However, depending on the file system used in the operating system, only the logical address of the file stored in the allocation table is overwritten with new metadata and the file with the original data is still stored on the hard disk.

Due to this fact, any users with access to this hard disk may try to recover this stored data, generating concerns to its owners. There are programs designed to recover data when they have not yet been physically removed from hard disk, such as Recuva, causing more concern to users regarding the security of their data. One way to avoid this kind of data recovery attack is by applying a data destruction technique on the hard disk. Data sanitization may be performed by physical techniques, where the disk is physically destroyed, or by means of logical techniques, where the original data is overwritten with new data, so that the final binary string of the operation is the most different from the original binary string of the data.

Find out more - subscribe to DFM today and read the full article. Or if you're a subscriber, login and read the article online.


 
Please make cache directory writable.
 

Submit an Article

Call for Articles

We are keen to publish new articles from all aspects of digital forensics. Click to contact us with your completed article or article ideas.

Featured Book

Learning iOS Forensics

A practical hands-on guide to acquire and analyse iOS devices with the latest forensic techniques and tools.

Meet the Authors

Angus Marshall

Angus Marshall is an independent digital forensic practitioner, author and researcher

 

Coming up in the Next issue of Digital Forensics Magazine

Coming up in Issue 34 on sale from February 2018:


Device Forensics in the Internet of Things

As more businesses and consumers adopt IoT devices, privacy violations and cyber-attacks by malicious actors will become commonplace due to the insecure IoT infrastructure. Read More »

Data Destruction In Current Hard Disks & Data Destruction Techniques

Data destruction is a process traditionally applied using physical techniques, aiming at the completely destruction of the hard disk, however, there is an increasing interest in the use of logical techniques for data destruction, that allow reusing the physical device. Read More »

Subscribe today


Faster Searching For Known Illegal Content

Cryptographic (“MD5”) hash searching for known illegal material is one of the most thorough methods of digital forensic investigation. However, the technique is hampered by the ever-increasing size of media being examined, and the size of the hash list being searched. Read More »

Every Issue
Plus the usual Competition, Book Reviews, 360, IRQ, Legal

Click here to read more about the next issue