About

We’re redefining “zero-trust.”

When security companies say “zero-trust,” they often mean “trust our software, hardware and staff.” We mean it. Multifactor lets you share any online account with people and AI agents without ever actually sharing the password.

  • Public Benefit Corporation

    Advancing cybersecurity for all.

    Our commitment
  • Backed by Y Combinator

    Part of Y Combinator’s Fall 2025 batch.

    Our YC page
  • $15M seed round

    Led by Nexus Venture Partners.

    Our seed round
  • A decade of research

    Patented and peer-reviewed.

    Our research

Backed by

  • Y Combinator
  • Nexus Venture Partners
  • Pioneer Fund
  • Flex Capital

Featured in

  • The New York Times
  • Forbes

Our team

The people building Multifactor

The people who make it possible.

  • Vivek Nair, Ph.D.

    Founder & CEO

    Vivek has spent over a decade researching applied cryptography. He was a Technical Lead in elite cyber units of the CIA and the US Department of Defense, and finished his Ph.D. in Computer Science at UC Berkeley at 22.

  • Dave Blumenfeld

    Founding Engineer

    Dave spent ten years in the defense industry as an ASIC designer, then founded Studio 256, a Web3 consultancy. In 2024 he co-founded Keypo, which built programmable encryption on secure hardware and joined Multifactor in 2026.

  • Pierre Ortega

    Founding Engineer

    Pierre spent five years as a senior engineer at Synthesis, building its iPad app and leading the move of its game servers from Heroku to Kubernetes for 10,000 learners. Before that, he built API security scanners at Data Theorem.

  • James Burns

    Design Engineer

    James studied graphic design at Uludag University and design and visual communications at Anadolu University. He designed websites for Dogslanding for three years, and as a freelancer on 99designs, before joining Multifactor in 2026.

Advisory board

The people who advise us

Their expertise spans augmented reality, artificial intelligence, computer security, complex systems modeling and deep-technology entrepreneurship.

  • Padma Warrior

    Former CTO, Cisco & Motorola

    Former CEO, NIO & Fable

    Board Member, Microsoft & Spotify

  • Mohan Warrior

    Angel Investor & Advisor

    Former CEO, Alfalight

    Former CEO, Nanocoolers

  • Louis Rosenberg, Ph.D.

    CEO & Founder, Unanimous AI

    Founder, Immersion Corp. ($IMMR)

    Prolific Inventor, 300+ Patents

  • Dawn Song, Ph.D.

    Professor, UC Berkeley

    135,000+ Paper Citations

    MacArthur Genius

  • Philip Welkhoff, Ph.D.

    Director, Gates Foundation

    PI, Intellectual Ventures

    Ph.D., Princeton University

  • Martina Welkhoff

    Entrepreneur & Investor

    Founding Partner, WXR Fund

    Founder, Zealyst & ConveneVR

  • Max Kleiman-Weiner, Ph.D.

    Professor, University of Washington

    Scout Investor, Sequoia Capital

    Founder, Common Sense Machines

  • Judy Savitskaya, Ph.D.

    Deal Lead, Stripe

    Former Investment Partner, a16z

    Ph.D., Bioengineering, UC Berkeley

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