In Part 1 of this 4-part series, we introduced the concept of “air gap networks”—secure computer networks that are physically isolated (“air gapped”) from their unsecured counterparts, such as an unsecured local area networks (LANs) or the public internet.
In addition to describing how data may be categorized as being Classified, Secret, Top Secret (TS), and Sensitive Compartmented Information (SCI), we also discussed the creation of secure facilities in the form of Sensitive Compartmented Information Facilities (SCIFs) or a Special Access Program Facilities (SAPFs).