Glossary

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Purge
  • Removal of sensitive data from an AIS at the end of a period of processing, including from AIS storage devices and other peripheral devices with storage capacity, in such a way that there is ensurance proportional to the sensitivity of the data that the data may not be reconstructed. An AIS must be disconnected from any external network before a purge. (DODD 5200. 28)
  • The removal of sensitive data from an AIS, AIS storage device, or peripheral device with storage capacity, at the end of a processing period. This action is performed in such a way that there is assurance proportional to the sensitivity of the data that the data may not be reconstructed. An AIS must be disconnected from any external network before a purge. After a purge, the medium can be declassified by observing the review procedures of the respective agency. Replaces the term clear. (NCSC-TG-004-88)