Air Gap
What is Air Gap?
An Air Gap, or air wall, describes a vital security process that keeps a digital device or private LAN detached from all external devices and networks, including the public internet. This methodology emphasizes security through isolation.
Understanding Air Gap
Air gaps serve as critical defenses for essential computer systems and protect the sensitive data they house from malware like viruses, keyloggers, ransomware, and various illicit access attempts. The goal here is to ensure complete electromagnetic, electrical, and physical separation of the targeted system.
In the realm of backup and recovery, air gapping holds significant value. When implementing the 3-2-1 backup strategy, you typically create three copies of data. While it's acceptable to keep two copies on the same network, the third copy should be isolated via an air gap and maintained at a separate location. This means that even if the initial two copies fall victim to an attack, data recovery can swiftly occur using the secure air-gapped backup.
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