MP-7: MEDIA USE
TAILORED FOR INDUSTRIAL CONTROL SYSTEMS
ICS Control Baselines:
- Low
- Moderate
- High
The organization [Selection: restricts; prohibits] the use of [Assignment: organization-defined types of information system media] on [Assignment: organization-defined information systems or system components] using [Assignment: organization-defined security safeguards].
SUPPLEMENTAL GUIDANCE
Information system media includes both digital and non-digital media. Digital media includes, for example, diskettes, magnetic tapes, external/removable hard disk drives, flash drives, compact disks, and digital video disks. Non-digital media includes, for example, paper and microfilm. This control also applies to mobile devices with information storage capability (e.g., smart phones, tablets, E-readers). In contrast to MP-2, which restricts user access to media, this control restricts the use of certain types of media on information systems, for example, restricting/prohibiting the use of flash drives or external hard disk drives. Organizations can employ technical and nontechnical safeguards (e.g., policies, procedures, rules of behavior) to restrict the use of information system media. Organizations may restrict the use of portable storage devices, for example, by using physical cages on workstations to prohibit access to certain external ports, or disabling/removing the ability to insert, read or write to such devices. Organizations may also limit the use of portable storage devices to only approved devices including, for example, devices provided by the organization, devices provided by other approved organizations, and devices that are not personally owned. Finally, organizations may restrict the use of portable storage devices based on the type of device, for example, prohibiting the use of writeable, portable storage devices, and implementing this restriction by disabling or removing the capability to write to such devices.
ICS SUPPLEMENTAL GUIDANCE
No ICS Supplemental Guidance.
RELATED CONTROLS: MP-7
CONTROL ENHANCEMENTS
MP-7 (1) MEDIA USE | PROHIBIT USE WITHOUT OWNER
ICS Control Baselines:
- Moderate
- High
The organization prohibits the use of portable storage devices in organizational information systems when such devices have no identifiable owner.
Supplemental Guidance:
Requiring identifiable owners (e.g., individuals, organizations, or projects) for portable storage devices reduces the risk of using such technologies by allowing organizations to assign responsibility and accountability for addressing known vulnerabilities in the devices (e.g., malicious code insertion).
No ICS Supplemental Guidance.
RELATED CONTROLS: MP-7 (1)
MP-7 (2) MEDIA USE | PROHIBIT USE OF SANITIZATION-RESISTANT MEDIA
NOT SELECTED FOR THE NIST ISC CONTROL SET
PROHIBIT USE OF SANITIZATION-RESISTANT MEDIA
Supplemental Guidance:
Sanitization-resistance applies to the capability to purge information from media. Certain types of media do not support sanitize commands, or if supported, the interfaces are not supported in a standardized way across these devices. Sanitization-resistant media include, for example, compact flash, embedded flash on boards and devices, solid state drives, and USB removable media.
RELATED CONTROLS: MP-7 (2)
REFERENCES:
- NIST Special Publication 800-82
- FIPS Publication 199
- NIST Special Publication 800-111