Our society is reliant on information sharing, in the form of data or voice, between people and things. Without it, work stops. Even short duration network outages can result in chaos within public transport systems (air traffic control of commercial flights, traffic signaling of rail networks); disrupt financial systems (electronic payments, stock market transactions); and reduce business productivity (phone and email). It can also have the potential for loss of life: field utility workers communicating remotely with dispatch controllers to de-energize and re-energize lines for repair; law enforcement field personnel communicating needs for crowd control during riots; and alerting the public about dam breaches through emergency notification systems. Learn how a communications network (CN) criticality framework (CF) can help you evaluate your own networks to improve network resilience as well as network security.