# Multifactor

> Multifactor is a San Francisco cybersecurity startup, part of Y Combinator's Fall 2025 batch, that lets people and AI agents access online accounts without ever exposing the underlying passwords. Using patented post-quantum cryptography, it turns any account - a bank, an inbox, an internal tool - into a shareable, revocable 'read-only' link, the way Google Docs shares a document. Founded by former CIA cyber officer Vivek Nair and ex-NASA cryptographer Colin Roberts, the company raised a $15M seed round in December 2025 led by Nexus Venture Partners.

- **Founded:** 2025
- **Headquarters:** San Francisco, United States
- **Founders:** Vivek Nair (Co-Founder & CEO), Colin Roberts (Co-Founder & CTO)
- **Team size:** ~5
- **Products:** Multifactor, Checkpoint, Multi, Enterprise plan, MFKDF2 / MFCHF2 / MFDPG2 / Switchboard
- **Notable:** Raised a $15M seed round in December 2025 led by Nexus Venture Partners, Selected for Y Combinator's Fall 2025 (F25) batch, Launched a free public product built on 8 patents in post-quantum cryptography

## Products & services

- **Multifactor** — A free, mathematically-guaranteed account manager that turns any online account into a shareable, revocable read-only link without exposing passwords. Supports unlimited accounts and sharing for individuals.
- **Checkpoint** — The technology that converts online accounts into shareable read-only links with fine-grained permissions, instant revocation, and detailed event history. Publicly launched November 12, 2025.
- **Multi** — An AI assistant that can access accounts securely on a user's behalf through Multifactor's permissioned, audited access layer.
- **Enterprise plan** — Custom tier adding advanced auditing and compliance, priority support with SLAs, cloud RBAC, and SSO integrations for teams and organizations.
- **MFKDF2 / MFCHF2 / MFDPG2 / Switchboard** — Underlying patented post-quantum cryptographic techniques that make account access provably secure and verifiable.

## Achievements

- Raised a $15M seed round in December 2025 led by Nexus Venture Partners
- Selected for Y Combinator's Fall 2025 (F25) batch
- Launched a free public product built on 8 patents in post-quantum cryptography
- Demonstrated confidence by exposing its own $1M corporate bank account via a public read-only link, promoted on a Times Square billboard
- CEO Vivek Nair is the youngest-ever recipient of a UC Berkeley Ph.D. in Computer Science and a CIA Exceptional Performance Award recipient

## Latest updates

- **2025-11** — Publicly launched its free account manager and the Checkpoint read-only link technology.
- **2025-12** — Raised a $15M seed round led by Nexus Venture Partners to secure online accounts for AI agents.

## Links

- Website: https://multifactor.com
- LinkedIn: https://www.linkedin.com/company/multifactorcom
- Twitter/X: https://x.com/multifactorcom
- GitHub: https://github.com/multifactor
- YouTube: https://youtube.com/@multifactorcom
- Instagram: https://instagram.com/multifactorcom
- Facebook: https://facebook.com/multifactorinc

---

Profile page: https://yespress.io/multifactor-yc-f25
Published by YesPress — https://yespress.io
Last updated: 2026-07-30