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 Sightline Media Group, the editorial team behind C4ISRNET, Defense News and Federal Times; Sightline is owned by Regent.

Our exclusive reporting is enhanced 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.