  Researchers that work for the same institution use their email as the main
communication tool. Email can be one of the most fruitful attack vectors of
research institutions as they also contain access to all accounts and thus to
all private information. We propose an approach for analyzing in terms of
security research institutions' communication networks. We first obtained
institutions' communication networks as well as a method to analyze possible
breaches of collected emails. We downloaded the network of 4 different research
centers, three from Spain and one from Portugal. We then ran simulations of
Susceptible-Exposed-Infected-Recovered (SEIR) complex network dynamics model
for analyzing the vulnerability of the network. More than half of the nodes
have more than one security breach, and our simulation results show that more
than 90\% of the networks' nodes are vulnerable. This method can be employed
for enhancing security of research centers and can make email accounts' use
security-aware. It may additionally open new research lines in communication
security. Finally, we manifest that, due to confidentiality reasons, the
sources we utilized for obtaining communication networks should not be
providing the information that we were able to gather.
