Data Sanitization Methods in Data Destruction Programs

Data sanitization is the process of securely overwriting data on a storage device to prevent its recovery. There are various data sanitization methods available in data destruction programs, each with its own characteristics and effectiveness. In this article, we will explore several popular data sanitization methods and the organizations behind their development.

Secure Erase:

Secure Erase is a robust method available in the firmware of PATA and SATA hard drives. It is considered highly effective because it is performed directly by the drive itself, which originally wrote the data. The National Institute of Standards and Technology (NIST) recommends that software-based data sanitation methods should use a hard drive’s Secure Erase commands.

DoD 5220.22-M:

The DoD 5220.22-M sanitization method was initially defined by the US National Industrial Security Program. It involves three passes of overwriting: one pass with zeros, one pass with ones, and one pass with random characters. However, this method is no longer permitted for use by several US government agencies.

NCSC-TG-025:

The NCSC-TG-025 sanitization method was defined in the Forest Green Book by the National Computer Security Center. It is similar to DoD 5220.22-M and involves overwriting with zeros, ones, and random characters. However, it is no longer a data sanitization standard for the NSA.

AFSSI-5020:

The AFSSI-5020 sanitization method was defined by the United States Air Force. It involves three passes of overwriting: one pass with zeros, one pass with ones, and one pass with random characters.

AR 380-19:

The AR 380-19 sanitization method was defined in Army Regulation 380-19. It involves three passes of overwriting: one pass with a random character, one pass with a specified character (e.g., zero), and one pass with the complement of the specified character (i.e., one).

NAVSO P-5239-26:

The NAVSO P-5239-26 sanitization method was defined in Navy Staff Office Publication 5239 Module 26. It involves three passes of overwriting: one pass with a specified character (e.g., one), one pass with the complement of the specified character (e.g., zero), and one pass with random characters.

RCMP TSSIT OPS-II:

The RCMP TSSIT OPS-II sanitization method was defined in the Technical Security Standards for Information Technology document published by the Royal Canadian Mounted Police (RCMP). It involves seven passes of overwriting: alternating zeros and ones, followed by a pass with random characters.

CSEC ITSG-06:

The CSEC ITSG-06 sanitization method was defined in IT Security Guidance 06 published by Communication Security Establishment Canada (CSEC). It involves three passes of overwriting: one pass with a one or zero, one pass with the complement of the previous character, and one pass with random characters.

HMG IS5:

The HMG IS5 sanitization method was defined in the HMG IA/IS 5 Secure Sanitisation of Protectively Marked Information or Sensitive Information document. It has two versions: HMG IS5 Baseline, which involves overwriting with zeros and a pass with random characters, and HMG IS5 Enhanced, which involves overwriting with zeros, ones, and random characters.

GOST R 50739-95:

GOST R 50739-95 is an originally Russian set of standards designed to protect against unauthorized access to information. There are different implementations of this method, but commonly, it involves either one pass with a zero or one pass with a random character.

Gutmann:

The Gutmann method, developed by Peter Gutmann, involves 35 passes of overwriting with random characters. However, it is considered excessive for modern hard drives and is not necessary for effective data sanitization.

Schneier:

The Schneier method, developed by Bruce Schneier, involves overwriting with ones, zeros, and multiple passes with random characters.

Pfitzner:

The Pfitzner method, developed by Roy Pfitzner, involves multiple passes of overwriting with random characters. It is sometimes implemented with seven passes.

Random Data:

The Random Data method involves overwriting with random characters. The number of passes can be customized based on the user’s preference.

Write Zero:

The Write Zero method, also known as Single Overwrite, involves a single pass of overwriting with zeros.

So In conclusion With Regard to our Services

Ensuring Comprehensive Data Erasure in Accordance with Our Commitment

Our commitment to safeguarding your data extends to an uncompromising approach to data erasure. As delineated in our terms and conditions, we undertake rigorous measures to ensure the complete elimination of your data from the devices you entrust to us. Our commitment encompasses not only the systematic application of data erasure methods but also the meticulous tracking of these processes, fortified by certification protocols.

Implementing Robust Data Sanitization Methods:

Numerous data sanitization methods exist, each offering a distinct approach to secure data erasure. While a single overwrite with a randomized character or zero is generally effective in preventing data recovery, specific compliance needs or the desire to manifest a higher echelon of data security might lead organizations to favour particular erasure methods.

Aligning with Your Requirements and Industry Standards:

Selecting the appropriate data sanitization method is paramount, and our adherence to industry best practices underscores this endeavour. We understand that your organizational requirements vary, and your selection of a data erasure method should reflect these nuances. Rest assured, our team is equipped to guide you in choosing the most fitting approach—one that aligns seamlessly with your organization’s needs and adheres to established industry benchmarks.

Unwavering Commitment to Security and Compliance:

Our unwavering commitment to data security and compliance underpins every facet of our operations. Beyond mere data erasure, we are dedicated to maintaining transparency, accountability, and the highest ethical standards. Our approach ensures that your data remains in safe hands, with processes aligned with both your specific requirements and the broader industry norms.

Certification and Tracking:

At the heart of our data erasure process lies a robust system of tracking and certification. We meticulously record each step of the data erasure journey, substantiated by certification protocols that attest to the successful eradication of your data. This system grants you not only the peace of mind that your data is secure but also the assurance that every precaution has been taken to mitigate any potential risks.

In essence, our commitment to data erasure traverses beyond mere technicality—it encapsulates a comprehensive strategy to safeguard your information while upholding industry standards and your unique organizational needs. At every juncture, we prioritize your data’s security and well-being, reinforcing our pledge to be your trusted partner in the realm of data management and security.