About Us What is Fifth Domain? Fifth Domain is the newest theater of warfare – cyberspace – joining land, sea, air and space. But unlike the other domains, the conflicts in cyberwar are rarely military-on-military. Instead, nation-states, criminal organizations and terrorist groups are going after civilian populations and infrastructure. We have seen this with Russia’s influence in the 2016 U.S. elections; China’s hack of the Office of Personnel Management; the seven Iranian nationals indicted for breaching a New York dam; and North Korea’s devastating attack on Sony. In order to meet this threat, stakeholders from across sectors and industries – public and private; civilian and military; domestic and international – need to come together for a holistic discussion on the challenges and solutions of the budding cyberwar. Fifth Domain fills that role as a central hub for news, information and collaboration, whether you’re a cyber pro or just getting started. Who are we? We are the editorial team behind C4ISRNET, Defense News and Federal Times, supplemented by additional exclusive reporting. The site is led by Editor Aaron Boyd and a strong team of seasoned reporters ready to deliver insightful, engaging news on the cyberwar. That reporting is fleshed out further with regular contributions from top influencers and thought-leaders, as well as engagement from you, our readers. We look forward to keeping you informed and learning from you along the way as we explore the Fifth Domain: Cyber.