  In this work, we explore the analogy between entanglement and secret
classical correlations in the context of large networks, more precisely the
question of percolation of secret correlations in a network. It is known that
entanglement percolation in quantum networks can display a highly nontrivial
behavior depending on the topology of the network and on the presence of
entanglement between the nodes. Here we show that this behavior, thought to be
of a genuine quantum nature, also occurs in a classical context.
