underground network
C49412
concept
An underground network is a covert, often informal system of interconnected individuals, groups, or infrastructure that operates out of public view to share resources, information, or influence.
Observed surface forms (2)
| Surface form | Occurrences |
|---|---|
| revolutionary underground network | 1 |
| underground information network | 1 |
Instances (3)
| Instance | Via concept surface |
|---|---|
| Samizdat information service during Czechoslovak normalization | underground information network |
| Xnet | — |
| urban underground of the 26th of July Movement | revolutionary underground network |