How does the implementation of Software-Defined Networking (SDN) impact traditional network security models?

The advent of Software-Defined Networking (SDN) has revolutionized the way network management and configuration are approached, offering unmatched flexibility and efficiency. However, with this technological shift comes a potential disruption to established security models that have traditionally relied on more static infrastructures. Understanding the implications of SDN on security involves examining both the potential vulnerabilities introduced through centralized network control and the opportunities for enhanced security measures through dynamic policy implementation. How can organizations adapt their security protocols to accommodate SDN's capabilities while mitigating new risks?