Air Gap
What is Air Gap?
A security measure that physically isolates a computer or network from unsecured networks, including the internet. Air-gapped systems are used in high-security environments to prevent remote cyber attacks.
Frameworks that govern air gap
What the standards actually require on air gap
Requirements naming air gap across 5 standards, quoted from the control text.
Isolate processes so that highly sensitive systems can be separated from everyday environments by a manual override air gap.
awwa-cybersecurity-guidance-for-the-water-sector-american-water-works-association::SC-9 · SC-9 Process isolation and manual override air gap →On completion the service is flushed until clear, then pressure tested before burial or concealment (the 2003 text required no leakage at 1500 kPa for at least 30 minutes, joints exposed on rubber ring systems);
as-nzs-3500-1-2021-plumbing-and-drainage-water-services::17.2-17.3 · 17.2 and 17.3 Flushing and hydrostatic testing →At least one handwashing sink, enough for convenient use in preparation, dispensing and warewashing areas and not fewer than law requires, is provided (Pf); approved automatic handwashing facilities may substitute where at least one handwashing sink exists.
us-fda-food-code-2026::5-203 · 5-203 Plumbing numbers and capacities →Approved policy, standards and procedures govern how backup and recovery is planned, implemented, tested and set as strategy; backup and recovery serve point-in-time recovery as well as disaster recovery;
edm-council-cdmc-cloud-data-management-capability-framework::6.1.3 · 6.1.3 Backups and point-in-time recovery are supported →The enterprise network is divided into separate trust or security zones with defence in depth, such as logical segmentation, hard backups and air gaps, to blunt attacks.
ffiec-cybersecurity-assessment-tool-cat::D3.PC.Im.Int.1 · D3.PC.Im.Int.1 Infrastructure Management (Intermediate 1) →Questions people ask about air gap
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