• Requirement

    When transferring information between different security domains, use [Assignment: organization-defined data type identifiers] to validate data essential for information flow decisions.

  • Discussion

    Data type identifiers include filenames, file types, file signatures or tokens, and multiple internal file signatures or tokens. Systems only allow transfer of data that is compliant with data type format specifications. Identification and validation of data types is based on defined specifications associated with each allowed data format. The filename and number alone are not used for data type identification. Content is validated syntactically and semantically against its specification to ensure that it is the proper data type.

More Info

  • Title

    Information Flow Enforcement | Data Type Identifiers
  • Family

    Access Control
  • NIST 800-53B Baseline(s)

    • Related NIST 800-53 ID

    NIST 800-53A Assessment Guidance

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