What is the purpose of an air gap in cybersecurity?
An air gap serves to physically isolate a computer or network from the internet and other untrusted networks, so that sensitive systems have no direct connection an attacker could reach through. The purpose is to create a barrier that remote threats like hackers, malware, and network-based intrusions cannot cross, because there is literally no link to exploit.
Air gaps are used to protect high-value targets where a breach would be catastrophic, such as military and intelligence systems, industrial control systems, power grids, and financial infrastructure.
The protection is not absolute, though: data still has to move in and out somehow, usually via removable media like USB drives, which can carry malware across the gap (the Stuxnet worm is the classic example).
For that reason, an air gap is one layer of defense rather than a complete solution, and it works best combined with strict physical access controls and media-handling policies.
Related content
What does air-gapped mean?
An air-gapped system is a computer or network that's physically isolated from the internet and other unsecured networks, with no direct connection to the outside world. This isolation is a security measure meant to protect sensitive data or critical systems from remote attacks.
What is on-premises AI?
On-premises AI refers to the deployment of artificial intelligence infrastructure and applications within an organization's own physical facilities (own servers). This approach contrasts with cloud-based solutions, where AI resources are hosted and managed by third-party providers. Here’s a detailed overview of on-premises AI, including its advantages, challenges, and ideal use cases. On-premises AI offers organizations greater control over their AI deployments while addressing specific needs related to security and compliance.
