Traditional telecom networks are based on closed operating system infrastructures that can be effectively protected from hacking and other attacks. Using SDN and NFV technologies for next generation network infrastructures offers benefits like openness, remote programmability, agility and other advantages of IT-like networks. However, the similarity to IT networks that makes SDN/NFV networks advantageous for communications service providers (CSPs) also makes them vulnerable to the full range of cyberattacks that target IT networks.