Simspace
Boston, US · Founded 2015 · Delaware corporation · 195 employees on LinkedIn · 2 known investors
SimSpace provides a cyber range platform where security teams train, test, and operationalize AI agents and human analysts in a realistic digital replica of their production environment. Its AI Proving Grounds lets teams continuously stress-test agentic SOC defenses against LLM-based threats.
Founders & leadership
Simspace was founded in 2015 by William Edward Hutchison, Jr. and Lee Milhem Rossey.
WE
William Edward Hutchison, Jr.Co-founder
LM
Lee Milhem RosseyCo-founder
JG
James GerberinChief Financial Officer2022–2024
Board
JR
Jason RottenbergBoard director
Investors · 2
Reported raises · per SEC filings
Form D private placements$43.1M disclosed across 1 round · 2023
▶$43.1MraisedDec 2023 · 6 investors · Other TechnologyRule 506(b)
▶$43.1MraisedDec 2023 · 6 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Jason RottenbergDirector
- James GerberExecutive Officer
- William Edward Hutchison, Jr.Executive Officer, Director
- Lee Milhem RosseyExecutive Officer, Director
- Offering amount
- $55M
- Amount sold
- $43.1M
- Sales commissions
- $1.7M
- Placement agents
- Bayshore Partners, LLC
- First sale
- Dec 2023
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Competitors · 10
by search overlapSentinel One95 shared keywordsSentinelOne provides an AI-powered cybersecurity platform for enterprises that integrates endpoint protection, threat detection, and incident response capabilities. The company serves large enterprises, including many Fortune 500 organizations, to protect against cyber threats at scale.
Crowdstrike83 shared keywordsCrowdStrike provides an AI-native cybersecurity platform that unifies endpoint, identity, cloud, SaaS, and AI protection to detect and stop breaches for enterprise organizations. It combines automated response with human-led security operations including managed detection and response, threat hunting, and security services.
Netezza76 shared keywordsIBM is a global technology company whose business spans enterprise software (including Red Hat, HashiCorp, and Confluent), IT infrastructure such as mainframes, servers, and storage, and IT consulting services. The company is also investing heavily in quantum computing and AI-based enterprise offerings, including its Lightwell open-source software security clearinghouse and the Anderon quantum wafer foundry.
Check Point Software68 shared keywordsCheck Point Software Technologies is a cybersecurity company providing security products and solutions. This page is its investor relations section, containing annual reports, SEC filings, financial results, and corporate governance information.
Splunk61 shared keywordsSplunk offers a unified platform for security and observability that ingests and analyzes large-scale data across hybrid cloud environments. Its tools support security operations centers with analytics and automated response, and help teams monitor application and infrastructure performance.
Cymulate59 shared keywordsCymulate provides a cybersecurity platform for security validation and exposure management, helping companies assess and strengthen their security posture. Founded in 2016, it serves over 1,000 customers across 50 countries.
Picus Security52 shared keywordsPicus Security develops security validation technology, including Breach and Attack Simulation and automated penetration testing, to help organizations identify and prioritize cyber exposures and apply mitigations. It serves enterprise security teams in the Adversarial Exposure Validation and cyber resilience category.
Wiz51 shared keywordsWiz provides cloud security platform that identifies and removes critical risks across multi-cloud environments. The company offers a unified security layer for organizations to manage risks and accelerate business operations on major cloud providers.
Cloud Range Cyber46 shared keywordsCloud Range provides a cloud-based cyber range platform that runs live-fire cyberattack simulations in realistic replica enterprise environments to test, train, and validate the readiness of security teams and agentic AI. It serves SOC analysts, incident responders, and security leaders with MITRE ATT&CK-aligned scenarios, hands-on labs, tabletop exercises, and measurable readiness reporting.
CyCognito46 shared keywordsCyCognito provides an external attack surface management (ASM) platform that continuously discovers, tests, and prioritizes exposures across an organization's internet-facing assets, subsidiaries, and third-party connections. It serves enterprise security teams with automated asset discovery, autonomous security testing (including DAST and vulnerability scanning), risk prioritization, and remediation workflows.
Companies competing with Simspace for the same Google search keywords, organic and paid, via search-intersection analysis.
Frequently asked questions
- What does Simspace do?
- SimSpace provides a cyber range platform where security teams train, test, and operationalize AI agents and human analysts in a realistic digital replica of their production environment. Its AI Proving Grounds lets teams continuously stress-test agentic SOC defenses against LLM-based threats.
- Who founded Simspace?
- Simspace was founded by William Edward Hutchison, Jr., Lee Milhem Rossey in 2015.
- Who are Simspace's investors?
- Simspace's investors include Communitas Capital Partners, Arsenal.
- How much funding has Simspace raised?
- Simspace has disclosed $43.1M raised across 1 round.
- Where is Simspace headquartered?
- Simspace is headquartered in Boston, US.