SimSpace Corporation

SimSpace Corporation, founded in 2015 and based in the United States, builds a cyber range platform designed for continuous cyber mission rehearsal. Its software lets organisations train individuals and teams, test security tools and AI agents, and validate their overall security posture in hyper-realistic, military-grade environments before real attacks occur. The company serves government agencies, critical infrastructure operators and enterprises.

The SimSpace Cyber Range Platform supports ongoing rehearsal and adaptation rather than periodic drills. Users can run adversary emulation exercises and rehearse responses to live attack scenarios in settings where teams can fail safely, learn from the experience and adjust their defences. The company describes the product as the world's most advanced cyber range platform and states that it has been recognised by Gartner and Forrester.

The firm was founded by alumni of U.S. Cyber Command and MIT's Lincoln Laboratory, giving it roots in military operations and applied research. Its stated working philosophy emphasises continuous improvement and readiness: regular rehearsal over annual exercises, with the aim of being prepared when a genuine incident begins.

Technical work at the company spans cybersecurity, cyber range simulation, cyber resilience training, AI agent testing and evaluation, security posture validation, adversary emulation and the construction of hyper-realistic cyber environments.