PR.DS-1: Data-at-rest is protected

Restrict access to [Assignment: organization-defined types of digital and/or non-digital media] to [Assignment: organization-defined personnel or roles].

Mark system media indicating the distribution limitations, handling caveats, and applicable security markings (if any) of the information; and Exempt [Assignment: organization-defined types of system media] from marking if the media remain within [Assignment: organization-defined controlled areas].

Physically control and securely store [Assignment: organization-defined types of digital and/or non-digital media] within [Assignment: organization-defined controlled areas]; and Protect system media types defined in MP-4a until the media are destroyed or sanitized using approved equipment, techniques, and procedures.

Protect and control [Assignment: organization-defined types of system media] during transport outside of controlled areas using [Assignment: organization-defined controls]; Maintain accountability for system media during transport outside of controlled areas; Document activities associated with the transport of system media; and Restrict the activities associated with the transport of system media to authorized personnel.

Sanitize [Assignment: organization-defined system media] prior to disposal, release out of organizational control, or release for reuse using [Assignment: organization-defined sanitization techniques and procedures]; and Employ sanitization mechanisms with the strength and integrity commensurate with the security category or classification of the information.

[Assignment: Restrict, Prohibit] the use of [Assignment: organization-defined types of system media] on [Assignment: organization-defined systems or system components] using [Assignment: organization-defined controls]; and Prohibit the use of portable storage devices in organizational systems when such devices have no identifiable owner.

Establish [Assignment: organization-defined system media downgrading process] that includes employing downgrading mechanisms with strength and integrity commensurate with the security category or classification of the information; Verify that the system media downgrading process is commensurate with the security category and/or classification level of the information to be removed and the access authorizations of the potential…

Protect the [Assignment (one or more): confidentiality, integrity] of the following information at rest: [Assignment: organization-defined information at rest].

Organizations can employ full-device encryption or container-based encryption to protect the confidentiality of CUI on mobile devices and computing platforms. Container-based encryption provides a more fine-grained approach to the encryption of data and information including encrypting selected data structures such as files, records, or fields. See [NIST CRYPTO].

System media includes digital and non-digital media. Digital media includes diskettes, magnetic tapes, external and removable hard disk drives, flash drives, compact disks, and digital video disks. Non-digital media includes paper and microfilm. Protecting digital media includes limiting access to design specifications stored on compact disks or flash drives in the media library to the…

Organizations can employ cryptographic mechanisms or alternative physical controls to protect the confidentiality of backup information at designated storage locations. Backed-up information containing CUI may include system-level information and user-level information. System-level information includes system-state information, operating system software, application software, and licenses. User-level information includes information other than system-level information.

Cryptographic key management and establishment can be performed using manual procedures or mechanisms supported by manual procedures. Organizations define key management requirements in accordance with applicable federal laws, Executive Orders, policies, directives, regulations, and standards specifying appropriate options, levels, and parameters. [SP 800-56A] and [SP 800-57-1] provide guidance on cryptographic key management and key establishment.

Information at rest refers to the state of information when it is not in process or in transit and is located on storage devices as specific components of systems. The focus of protection at rest is not on the type of storage device or the frequency of access but rather the state of the information.…