SC — SYSTEM AND COMMUNICATIONS PROTECTION

SC-28: PLATFORM-INDEPENDENT APPLICATIONS

  • NIST 800-53R4 Membership SC-28:
  • MODERATE
  • HIGH

The information system protects the [Selection (one or more): confidentiality; integrity] of [Assignment: organization-defined information at rest].

SUPPLEMENTAL GUIDANCE

This control addresses the confidentiality and integrity of information at rest and covers user information and system information. Information at rest refers to the state of information when it is located on storage devices as specific components of information systems. System-related information requiring protection includes, for example, configurations or rule sets for firewalls, gateways, intrusion detection/prevention systems, filtering routers, and authenticator content. Organizations may employ different mechanisms to achieve confidentiality and integrity protections, including the use of cryptographic mechanisms and file share scanning. Integrity protection can be achieved, for example, by implementing Write-Once-Read-Many (WORM) technologies. Organizations may also employ other security controls including, for example, secure off-line storage in lieu of online storage when adequate protection of information at rest cannot otherwise be achieved and/or continuous monitoring to identify malicious code at rest.

CONTROL ENHANCEMENTS

SC-28 (1) PROTECTION OF INFORMATION AT REST | CRYPTOGRAPHIC PROTECTION

The information system implements cryptographic mechanisms to prevent unauthorized disclosure and modification of [Assignment: organization-defined information] on [Assignment: organization-defined information system components].

Supplemental Guidance:

Selection of cryptographic mechanisms is based on the need to protect the confidentiality and integrity of organizational information. The strength of mechanism is commensurate with the security category and/or classification of the information. This control enhancement applies to significant concentrations of digital media in organizational areas designated for media storage and also to limited quantities of media generally associated with information system components in operational environments (e.g., portable storage devices, mobile devices). Organizations have the flexibility to either encrypt all information on storage devices (i.e., full disk encryption) or encrypt specific data structures (e.g., files, records, or fields). Organizations employing cryptographic mechanisms to protect information at rest also consider cryptographic key management solutions.

RELATED CONTROLS: SC-28 (1)

SC-28 (2) PROTECTION OF INFORMATION AT REST | OFF-LINE STORAGE

The organization removes from online storage and stores off-line in a secure location [Assignment: organization-defined information].

Supplemental Guidance:

Removing organizational information from online information system storage to off-line storage eliminates the possibility of individuals gaining unauthorized access to the information through a network. Therefore, organizations may choose to move information to off-line storage in lieu of protecting such information in online storage.

REFERENCES:

  • NIST Special Publication 800-111
  • NIST Special Publication 800-56
  • NIST Special Publication 800-57

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