Field notebook · source record
AC-4(12)
Access ControlData Type Identifiers
The statement below is source material, not a generated control summary.
Source statement
When transferring information between different security domains, use {{ insert: param, ac-04.12_odp }} to validate data essential for information flow decisions.
Guidance
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.
Organization-defined parameters
Organization-defined · unresolvedCatalog reference only. No project value has been assigned or evaluated here.
- ac-04.12_odp
data type identifiers
Source guidance- data type identifiers to be used to validate data essential for information flow decisions are defined;
Assessment reference context
Retained, not activated.1 source assessment records and 1 objective nodes are available as reference context. This surface runs none of them.
ac-4.12_objAC-04(12)1 objective nodes
- when transferring information between different security domains, {{ insert: param, ac-04.12_odp }} are used to validate data essential for information flow decisions.
Reference method and authority
- InputExact release, source digest, control ID, and cited source fields
- Agent taskPrepare a bounded evidence request or test-plan draft
- Fail closedAbstain when source, scope, or assessment identity is missing
- Human acceptanceA named reviewer decides whether evidence supports the conclusion