Air-gapped
Also known as: air gap
Air-gapped means a system is physically disconnected from any network — no Wi-Fi, no Ethernet, no cloud.
It’s the strongest isolation you can get:
- Nothing can be exfiltrated (there’s no path out).
- Nothing can be updated remotely (bring media in physically).
The price: air-gap buys maximum isolation but costs you updates and convenience. It's for sensitive or regulated data, not casual use.