Fundraising Fox

Mark Hatfield

Investor

Founder & Partner at Ten Eleven

Boston, Massachusetts

Writes $3M – $15M checks Β· typically $9M

About

Mark Hatfield, a Founder and General Partner and one of the original specialist cybersecurity VCs, is a frequently cited authority on protecting AI/ML models from data poisoning and adversarial attacks.

Invests in

AI & Machine LearningCrypto & Web3CybersecurityData & InfrastructureFintech

Experience

  1. Ten Eleven VenturesFounder and Partnercurrent2014 β€” present
  2. furlBoard Member and Investorcurrent2026 β€” present
  3. VulnCheckBoard Member and Investorcurrent2025 β€” present
  4. HypernativeBoard Member and Investorcurrent2025 β€” present
  5. DarkhiveBoard Member and Investorcurrent2024 β€” present
  6. AembitBoard Member and Investorcurrent2023 β€” present
  7. SemperisInvestorcurrent2022 β€” present
  8. NetSPIInvestorcurrent2021 β€” present
  9. ReliaQuestBoard Member, Investorcurrent2020 β€” present
  10. ImmutaInvestorcurrent2020 β€” present
  11. KasadaInvestorcurrent2020 β€” present
  12. Cado SecurityBoard Member, Investor2020 β€” 2025London, England, United Kingdom
  13. Vulcan CyberBoard Member, Investor2019 β€” 2025Israel
  14. Noetic CyberBoard Member, Investor2021 β€” 2024
  15. DarktraceInvestor2016 β€” 2024
  16. Axis SecurityInvestor2020 β€” 2023
  17. CyberGRXBoard Member, Investor2016 β€” 2023
  18. Digital ShadowsInvestor2015 β€” 2022
  19. KnowBe4Investor2019 β€” 2021
  20. BLACKHORSE SOLUTIONS, INC (BH)Board Member, Investor2017 β€” 2021

Education

  1. McMaster University
  2. York University

Skills & more

Venture CapitalStart-ups

From Mark's professional profile.

Same school

Shared employers

Deals Β· 5

Fleet Device Management Inc.Board seat

via Ten Eleven Β· filed Jul 2025 Β· $27.9M raise

Aembit, Inc.Board seat

via Ten Eleven Β· filed Jul 2024 Β· $25M raise

HiddenLayer, Inc.Board seat

via Ten Eleven Β· filed Feb 2024 Β· $50.2M raise

JASK Autonomous Security PlatformBoard seat

via Ten Eleven Β· filed Oct 2019 Β· $34M raise

Cyber Global Risk ExchangeBoard seat

via Ten Eleven Β· filed Apr 2017 Β· $20M raise

Attribution from SEC filings, press coverage, and firm rosters.

Colleagues at Ten Eleven

Network1

Investors connected to Mark in public investor directories β€” a warm-intro map.