A darknet is an overlay network that can only be accessed with specific software, configurations, or authorization, often using non-standard communications protocols and ports. Two typical darknet types are friend-to-friend networks (usually used for file sharing with a peer-to-peer connection) and privacy networks such as Tor. (read more)
At variance with other networked systems, like the Internet, the Darknet exhibit an extremely high level of resilience to random failures, targeted attacks and capacity overloading which might trigger cascades of systemic failures. But why?
In our recent work we have tried to answer this question and we have proposed a novel network mechanism which is able to reproduce most of the Darknet salient features, such as an heterogeneous connectivity distribution (scale-free-like), high clustering and lack of rich-club organization, making this system highly decentralized.
Difference in centralization between Internet-like and Darknet-like networks.
A sketch of our model for Darknet's growth.
Modeling structure and resilience of the dark network
Manlio De Domenico and Alex Arenas
Phys. Rev. E 95, 022313 (2017)