  Nowadays society is more and more dependent on critical infrastructures.
Critical network infrastructures (CNI) are communication networks whose
disruption can create a severe impact. In this paper we propose REACT, a
distributed framework for reactive network resilience, which allows networks to
reconfigure themselves in the event of a security incidents so that the risk of
further damage is mitigated. Our framework takes advantage of a risk model
based on multilayer networks, as well as a graph-coloring problem conversion,
to identify new, more resilient configurations for networks in the event of an
attack. We propose two different solution approaches, and evaluate them from
two different perspectives, with a number of centralized optimization
techniques. Experiments show that our approaches outperform the reference
approaches in terms of risk mitigation and performance.
