NIST 800-171 Control 3.8.3: Media Sanitization and Disposal
Control 3.8.3 requires organizations to sanitize or destroy system media before disposal or reuse to prevent unauthorized access to sensitive data. This control protects against data breaches caused by improperly discarded hardware, drives, or removable media containing CUI or other protected information. For SMBs handling regulated data, establishing a media disposal process is essential to compliance and risk management.
What this means
Media sanitization means rendering data unrecoverable from storage devices before they leave your organization. This includes hard drives, SSDs, USB drives, backup tapes, optical media, and any device that held system or organizational data. Destruction is an acceptable alternative when sanitization isn't feasible. The goal is to ensure no residual data can be accessed, recovered, or exploited after disposal or reassignment.
How to comply
- 1.Inventory all system media and storage devices across your organization, including endpoints, servers, backups, and portable devices.
- 2.Define sanitization standards based on media type—overwriting for drives, degaussing for magnetic media, or physical destruction for sensitive devices.
- 3.Use certified sanitization tools or services that meet NIST SP 800-88 guidelines for data sanitization.
- 4.Document the sanitization process, including method, date, and confirmation that data is unrecoverable.
- 5.Establish a disposal procedure that requires sanitization or destruction before media leaves your facility.
- 6.Train staff on proper handling of media and the sanitization requirement before end-of-life or reuse.
- 7.Verify sanitization through audit logs or certificates from third-party disposal vendors.
- 8.Maintain records of all sanitized or destroyed media for compliance audits.
Evidence auditors look for
- Media sanitization and disposal policy document outlining methods and procedures
- Inventory list of all system media and storage devices
- Sanitization tool output or logs showing successful data overwriting or verification
- Certificates of destruction from certified e-waste or data destruction vendors
- Purchase orders or contracts with vendors providing sanitization services
- Staff training records on media disposal procedures
- Disposal request forms completed and signed before media removal
- Audit trails showing sanitization completion dates and methods used
Frequently asked questions
When will FAQs be available?
The FAQ for this control is currently being prepared.
GRCWatch automates media disposal tracking by maintaining a centralized inventory of all devices and storage media, flagging items due for sanitization, and generating destruction certificates—eliminating manual tracking and ensuring no device leaves your facility without documented proof of sanitization.
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