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What is Air Gap?
A security mechanism that isolates a digital device or private local area network (LAN) from other devices and networks, including the public internet, is known as an air gap. An air gap is also known as an air wall, and using air gaps to secure vital data is referred to as security through isolation.
Understanding Air Gap
Air gaps are used to safeguard vital computer systems and the data they contain against viruses, keyloggers, ransomware, and other forms of illegal access. This method tries to provide comprehensive electromagnetic, electrical, and physical isolation of a given system.
Air gapping is also important in backup and recovery. In the case of 3-2-1 backups, each backup has three copies. While two of the copies can be stored on the same network, the third copy must be air-gapped and physically stored at a distinct location. Even if the network is attacked and the first two copies are compromised, storage administrators can swiftly restore data using the air-gapped copy.
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