SimSpace
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Location
Headquarters: Boston, Massachusetts, United States, North America
Region: Massachusetts
Country: US
Continent: North America
About
SimSpace provides a realistic, intelligent cyber range used for training, testing, and validating cyber defenses across industries and government. Built for enterprise environments, it emulates authentic networks and attacker behaviors to help security teams develop AI models, upskill personnel, and strengthen teams through live-fire exercises. Created with input from U.S. Cyber Command and MIT’s Lincoln Laboratory, SimSpace serves industry, education, and state, local, and federal governments worldwide to build cyber readiness and resilience.
SimSpace provides a cyber range platform that emulates authentic enterprise networks and attacker behaviors for training and testing purposes. The company serves government, industry, and education clients to help security teams develop AI models, upskill personnel, and validate defenses through live-fire exercises. Founded by experts from U.S. Cyber Command and MIT’s Lincoln Laboratory, it focuse
SimSpace Corporation
2015
for_profit
active
Industries
Primary Industry: Media & Internet
Categories
Funding & Financials
series_unknown
45000000
10m-50m
private
Investors
Founders
Lee Rossey
William Hutchison
Leadership
Technology Stack
Products
SimSpace Platform: A cyber range platform providing realistic training, testing, and cyber drilling within tailored environments to assess and improve cybersecurity readiness.
Attack Catalog: A comprehensive collection of detailed cyber attack scenarios that describe attacker tactics, techniques, and procedures for use in training and defense preparation.
Training Catalog: A collection of cybersecurity training courses covering foundational to advanced skills for blue, red, and purple team disciplines.
After Action Report (AAR): A reporting service that analyzes cybersecurity drills to provide insights on team performance, readiness, and recommendations for improvement.
Cyber Threat Intelligence (CTI) Emulation: A service that enables dynamic threat emulation and real-time scenario testing to support cyber threat intelligence teams in refining strategies and mitigating risks.
Operational Technology (OT) Cyber Range: A cyber range solution focused on defending critical OT environments through tailored training and high-fidelity simulations of sector-specific cyber threats.
Funding rounds
Series Unknown · $39M · (2025-10-27) · Lead: Communitas Capital Partners
Debt Financing · (2025-10-27) · Lead: BTG Pactual
Series Unknown · $45M · (2023-12-19) · Lead: L2 Point
Connect
Connect
Open positions(5)
- Backend Senior Software Engineer (Control Plane & Orchestration)PremiumFull-timeWork from HomeRemote - Costa Rica1,500,000–2,500,000 / Month
- Backend Senior Software Engineer (AUE: Attack and User Emulation Team)Full-timeWork from HomeRemote - Costa Rica1,500,000–2,500,000 / Month
- Backend Senior Software Engineer (Control Plane & Orchestration)PremiumFull-timeWork from HomeRemote - Costa Rica1,500,000–2,500,000 / Month
- Software Engineer - FullstackPremiumFull-timeWork from HomeRemote - Costa Rica1,500,000–2,500,000 / Month
- Senior UX DesignerFull-timeHybridBoston Office155,000–220,000 / Year