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Stephenson Stellar Corporation

Space Systems Protection Directorate

Our Mission

The Spacecraft Protection Directorate delivers advanced cybersecurity and engineering solutions to protect space missions from evolving threats. We integrate mission assurance, threat intelligence, resilient architecture design, and threat informed testing to secure spacecraft throughout their lifecycle, from design and integration through on-orbit operations. In partnership with government, industry, and research organizations, we mature and transition state of the art defense technologies that enable trusted and secure space operations. 


  • Space Systems and Flight Software Vulnerability Research and Hardening
  • Space Threat/Adversary Emulation
  • Threat Informed Space Cyber Test & Evaluation
  • On-Orbit Monitoring, Anomaly Detection & Mission Incident Response Engineering
  • Standards Alignment, Tailored Controls & Accreditation Support
  • Mission Cyber Architecture & Resilience Engineering (Space/Link/Ground)
  • Space System Applications DevSecOps
  • Research and Development of Cybersecurity Solutions for Space Systems


Copyright © 2026 Stephenson Stellar Corporation - All Rights Reserved.  


Stephenson Stellar Corporation (Stellar) is a 501(c)3 nonprofit research and development organization focused on assuring our nation remains a global leader in the secure space and air domain operations. 

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