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Multifactor

Zero-trust authentication, authorization, and auditing for AI agents

The agentic era is here, but its foundation is dangerously insecure. A growing number of high-profile "AI agent gone rogue" security incidents make headlines each week. As enterprise adoption of agentic software has far outpaced the development of applicable cybersecurity solutions, CISOs have loudly voiced a growing need for verifiable, fine-grained security controls on complex multi-agent systems. That's why we built Multifactor. Multifactor offers best-in-class authentication, authorization, and auditing technologies for agentic systems, allowing users to securely and revocably share online accounts with agents while maintaining fine-grained permissions and a detailed event history. We are doing for AI security what Cloudflare did for web security, Okta did for identity security, and Wiz did for cloud security: defining the category. A world-class "account manager" that allows agents to securely use online accounts on your behalf is just the start—our early enterprise partners include companies using AI agents to manage $7.5+ billion manufacturing supply chains, where the consequences for lapses in security are severe. Our patented AI security technology seamlessly integrates with existing agentic software to thwart attacks like prompt injection, so CISOs and end users alike can breathe a sigh of relief, without slowing the pace of AI adoption.
Active Founders
Vivek Nair
Vivek Nair
Co-Founder & CEO
Former CIA agent and Technical Lead for elite cyber units of the CIA & DOD. Youngest ever Ph.D. in Computer Science from UC Berkeley. NSF, NPSC, and Hertz fellow. Winner of the CIA's Exceptional Performance Award for extraordinary contributions to US national security.
Colin Roberts
Colin Roberts
Co-Founder & CTO
Ph.D. Mathematician & Applied Cryptographer. Former NASA Scientist. Expert in designing robust and provably secure mission-critical multi-agent systems using mathematical rigor. Deep experience at scaling and leading cryptography-focused startups.
Company Launches
Multifactor: A password manager built for secure sharing with humans & AI
See original launch post

Explainer Video

https://www.youtube.com/watch?v=lug9O3BK7ok

Multifactor is building the future of zero-trust authentication, authorization, and auditing for AI agents.

Today, we’re excited to launch the best new way to securely share online accounts with humans and AI agents alike. Multifactor turns any online account into a “checkpoint link,” making secure and revocable account sharing as easy as sharing a Google doc.

FAQs

🧑‍💻 Who are we?
Vivek Nair, co-founder & CEO, is a Ph.D. computer scientist and former CIA officer. Colin Roberts, co-founder & CTO, is a Ph.D. mathematician and former NASA scientist. We’re both passionate about usable security, with over a decade of cybersecurity experience.

🤔 What can I use it for?
One of our investors uses the app to share email and calendar access with a rotating team of personal assistants without worrying about unauthorized edits.
Our friend who is a financial advisor uses Multifactor to manage their clients’ brokerage accounts without needing their passwords.
Our colleague uses Multifactor to share Instacart and Netflix accounts with her roommates while being able to easily add and remove people.

⏳ Why now?
With increasing adoption of passkeys, biometrics, and MFA, accounts are getting more secure but harder than ever to share. Sharing conventional accounts with non-human actors (like AI agents) is also an emerging need that current solutions fail to address.

🔜 What’s next?
Multi, our AI assistant specializing in secure online account use, is right around the corner, with API access for developers coming shortly thereafter. The version you’re using today will always be free, but an enterprise plan with advanced features is coming soon.

Our world-class "account manager" that allows agents to securely use online accounts on your behalf is just the start—our patented AI security technology seamlessly integrates with existing agentic software to thwart attacks like prompt injection, so CISOs and end users alike can breathe a sigh of relief, without slowing the pace of AI adoption.

Get Started

Demo Videos

Sharing accounts just by sending a link, without ever actually sharing the passwords. Can your password manager do that? https://www.youtube.com/watch?v=Vr_Ub0pBi6M

Instantly revoke shared accounts, without having to change your passwords. Can your password manager do that? https://www.youtube.com/watch?v=TmDJX29SIU0

One-click logins to any site, on any device. Can your password manager do that? https://www.youtube.com/watch?v=r9NgEfFDy8A

Securely sharing any online account with AI agents. Can your password manager do that? https://www.youtube.com/watch?v=d3kRAlZei00

Product Images

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Multifactor
Founded:2025
Batch:Fall 2025
Team Size:2
Status:
Active
Location:San Francisco
Primary Partner:Nicolas Dessaigne