ISO/IEC 27040:2024 — Storage Security & Secure Data Sanitization Software

ISO/IEC 27040:2024 establishes a structured approach to storage security and risk mitigation.

The standard covers security considerations associated with:

• Storage Devices
• Storage Media
• Storage Systems
• Storage Networks
• Storage Management
• Applications And Services
• Data Stored Within ICT Environments
• Data Transferred Across Storage-Related Communication Links
• User Activities
• End-Of-Use And End-Of-Life Storage

ISO describes the standard as applicable to organizations and individuals involved in owning, operating, acquiring, managing or using storage devices, media, networks and related services.

This makes ISO/IEC 27040 different from a traditional data wiping algorithm.

It is fundamentally a storage-security framework, within which data sanitization and secure disposal form important operational considerations.

ISO's official catalogue identifies ISO/IEC 27040:2024 as the published second edition and shows ISO/IEC 27040:2015 as withdrawn.

Data sanitization is not simply a question of running a predefined number of overwrite passes.

A storage-security program needs to consider:

What data is stored? ↓ Where is it stored? ↓ What storage technology is being used? ↓ What security risk exists? ↓ What is the intended disposition? ↓ What sanitization or disposal technique is appropriate? ↓ How is the result verified? ↓ How is the operation documented?

This lifecycle approach aligns with the broader storage-security philosophy of ISO/IEC 27040:2024.

DSP provides a dedicated ISO/IEC 27040:2024 Sanitization Method within the DSP Sanitization Engine.

Rather than treating ISO/IEC 27040:2024 as a fixed three-pass, seven-pass or 35-pass wiping algorithm, DSP uses the standard as a storage-security-oriented sanitization methodology.

IDENTIFY Identify the storage device and relevant characteristics.

CLASSIFY Determine storage technology, media type and device context.

ASSESS Assess device accessibility, health and sanitization requirements.

SELECT Select the ISO/IEC 27040:2024 sanitization profile.

CHOOSE APPLICABLE TECHNIQUE Apply the appropriate sanitization approach for the storage technology and organizational requirements.

EXECUTE Run the selected sanitization operation through the DSP Sanitization Engine.

VERIFY Verify the execution result and identify errors or anomalies.

VALIDATE Determine whether the result meets the defined sanitization acceptance criteria.

DOCUMENT Record device, method, execution and verification information.

CERTIFY Generate an audit-ready DSP sanitization certificate.

This distinction is essential.

ISO/IEC 27040:2024 does not mean:

• Always Overwrite Once
• Always Overwrite Three Times
• Always Overwrite Seven Times
• Always Use Random Data
• Always Use Zeros
• Always Use A Particular Legacy Wiping Pattern

Instead, storage security needs to account for the characteristics and risks of the storage environment.

The appropriate sanitization technique can depend on:

• Storage Technology
• Media Characteristics
• Data Sensitivity
• Device Condition
• Security Requirements
• Intended Reuse
• Disposal Requirements
• Organizational Policy
• Technical Capabilities
• Required Assurance

This is particularly important for modern SSD and NVMe devices, where traditional logical overwriting may not address every physical flash location because of controller-managed storage architectures.

For traditional magnetic HDDs, DSP can provide software-based sanitization operations while monitoring the storage device.

The workflow can include:

• Drive Identification
• Model Detection
• Serial-Number Capture
• Capacity Detection
• Interface Identification
• SMART Information
• Temperature
• Power-On Hours
• Health Status
• Bad-Sector Information
• Sanitization Progress
• Write Rate
• Errors
• Verification

The actual sanitization technique should be selected according to the organization's security requirements and the characteristics of the media.

Modern solid-state storage requires a different technical approach from traditional magnetic HDDs.

SSD and NVMe devices may incorporate:

• Flash Translation Layers
• Wear Leveling
• Garbage Collection
• Spare Blocks
• Over-Provisioned Capacity
• Remapped Physical Locations
• Controller-Level Management

Consequently, a conventional logical overwrite should not automatically be considered equivalent to complete physical sanitization of every historical flash location.

DSP can identify supported storage technologies and provide appropriate sanitization workflows.

For stronger sanitization requirements organizations may use device-specific sanitization capabilities or other applicable techniques rather than relying solely on repeated host-level writes.

This storage-technology distinction is particularly important in the context of modern media sanitization guidance such as NIST SP 800-88 Rev. 2 and IEEE 2883. NIST's current Rev. 2 specifically emphasizes program-level sanitization controls and recommends alignment with IEEE 2883, NSA specifications or organizationally approved standards for technology-specific techniques.

ISO/IEC 27040:2024 takes a lifecycle-oriented approach to storage security.

DSP can support the operational portion of that lifecycle by providing structured device sanitization and evidence generation.

Procure

Storage technology and security requirements are identified.

Deploy

Storage devices and systems are placed into operation.

Operate

Security controls protect stored information and storage infrastructure.

Monitor

Device and storage conditions can be monitored.

Retire

Storage equipment reaches end of use.

Sanitize

Data is securely removed using the selected sanitization approach.

Verify

The sanitization result is assessed.

Reuse / Transfer / Dispose

The storage device is reused, transferred, retained or destroyed according to organizational requirements.

ISO/IEC 27040:2024 explicitly includes security considerations extending through the lifetime of devices and media and after end of use or end of life.

Secure storage retirement is an important part of IT Asset Disposition.

Before a computer, server, HDD, SSD or other storage device is:

• Reused
• Refurbished
• Resold
• Transferred
• Returned
• Recycled
• Disposed

the organization must determine how information stored on the device will be protected.

DSP can provide an operational sanitization workflow for ITAD environments.

1. 01Asset Intake
2. 02Device Identification
3. 03Storage Assessment
4. 04Sanitization Method Selection
5. 05Data Sanitization
6. 06Verification
7. 07Certificate Generation
8. 08Asset Release / Reuse / Disposal

This provides documented evidence connecting the storage device to the sanitization operation.

DSP supports sanitization workflows across a broad range of storage technologies, including:

Storage security decisions should account for device condition.

DSP can assess and report:

• SMART Health
• Temperature
• Power-On Hours
• Read Errors
• Write Errors
• Bad Sectors
• Unstable Sectors
• Device Warnings
• Inaccessible Regions

This is particularly important for retired HDDs and SSDs.

A device with inaccessible storage areas may require a different sanitization or disposal decision than a healthy device that can be fully addressed by the selected sanitization technique.

DSP separates the concepts of verification and validation within the sanitization workflow.

Verification determines whether the selected sanitization operation completed as expected.

Examples include:

• Completion Status
• Error Detection
• Device Response
• Verification Checks
• Operation Logs

Validation determines whether the resulting condition satisfies the organization's sanitization requirements.

For example:

1. 01Operation Completed
2. 02Verification Passed
3. 03Result Reviewed
4. 04Device Accepted

or:

1. 01Operation Failed
2. 02Result Rejected
3. 03Different Technique / Escalation Required

This approach is particularly useful in enterprise and ITAD environments where sanitization decisions need documented evidence.

The relationship between the two standards is important.

NIST explicitly states that Rev. 2 improves alignment between media-sanitization guidance and cybersecurity standards including ISO/IEC 27040.

Therefore, ISO/IEC 27040:2024 and NIST SP 800-88 Rev. 2 should not be presented as competing disk-wiping algorithms.

They address related security requirements from different perspectives.

IEEE 2883 provides technology-specific storage-sanitization methods, while ISO/IEC 27040:2024 provides a broader storage-security framework.

This distinction becomes important for organizations that need to determine:

1. 01Why Sanitization Is Required
2. 02What Risk Must Be Addressed
3. 03What Storage Technology Is Involved
4. 04Which Technical Sanitization Method Should Be Applied
5. 05How The Result Should Be Verified And Documented

NIST SP 800-88 Rev. 2 specifically points organizations toward IEEE 2883, NSA specifications or an organizationally approved standard for technology-specific sanitization techniques, except for its expanded treatment of Cryptographic Erase.

DSP can be used within enterprise storage-security workflows involving:

• Enterprise IT
• Data Centers
• ITAD Providers
• Refurbishers
• Hardware Recyclers
• Managed Service Providers
• Government Organizations
• Financial Institutions
• Healthcare Organizations
• Educational Institutions
• Large Corporate Environments

Organizations can establish their own sanitization policies and use DSP to execute and document the applicable device-level sanitization operation.

DSP can support offline sanitization workflows for environments where storage devices cannot be connected to external cloud services.

This can be useful for:

• Air-Gapped Environments
• Government Facilities
• Secure Laboratories
• Enterprise Data Centers
• Restricted Networks
• Defense Environments
• Sensitive ITAD Operations

The sanitization operation can be performed locally while maintaining the required operational and verification information for reporting.

DSP can generate an audit-ready sanitization certificate after the selected operation.

A report can contain:

A key advantage of positioning ISO/IEC 27040:2024 correctly is that it allows organizations to understand storage security as more than simply wiping a hard drive.

The broader storage-security environment can include:

ISO describes the standard as addressing both stored information and information transferred across storage-related communication links, along with devices, media, management activities, applications and services.

DSP addresses the sanitization and evidence-generation component of this wider storage-security lifecycle.

This distinction helps prevent an important SEO and technical error:

It is a storage-security standard.

ISO/IEC 27040:2024 can be part of a broader DSP sanitization environment containing multiple modern and historical sanitization methodologies.

Examples include:

Each method is maintained as a separate selectable DSP sanitization profile, with the execution and reporting appropriate to the selected methodology.

• 01DSP-DPDP India
• 02NIST SP 800-88 Rev. 1 Clear
• 03NIST SP 800-88 Rev. 1 Purge
• 04NIST SP 800-88 Rev. 2 Clear
• 05NIST SP 800-88 Rev. 2 Purge
• 06IEEE 2883-2022
• 07ISO/IEC 27040:2024
• 08Random Overwrite
• 09DoD 5220.22-M
• 10DoD 5220.22-M ECE
• 11NSA/CSS Policy Manual 9-12
• 12HMG IS5 Baseline
• 13HMG IS5 Enhanced
• 14CSEC ITSG-06
• 15BSI-GSE
• 16BSI VSITR
• 17Gutmann Method
• 18Schneier Algorithm
• 19Pfitzner Method
• 20AFSSI-5020
• 21AR 380-19
• 22GOST R 50739-95
• 23NZISM
• 24NAVSO P-5239-26
• 25RCMP TSSIT OPS-II