Multifactor AI
Multifactor AI, a Y Combinator Fall 2025 startup, was founded by Vivek Nair, a former CIA officer with a Ph.D.
Profile
Multifactor provides a secure platform for sharing online account access without exposing passwords, designed for both humans and AI agents.
Multifactor AI, a Y Combinator Fall 2025 startup, was founded by Vivek Nair, a former CIA officer with a Ph.D. in Computer Science from UC Berkeley, and Colin Roberts, a former NASA researcher with a Ph.D. in mathematics. The company addresses security risks in the AI era by developing a post-quantum security platform that enables secure, shareable access to online accounts for both humans and AI agents. Multifactor's flagship product, Checkpoint, allows users to grant temporary 'read-only' access to accounts without exposing underlying credentials, a critical need as AI agents become more prevalent in workflows.
The company raised $15 million in seed funding in December 2025, led by Nexus Venture Partners, to scale its technology. Multifactor's approach is rooted in cryptographic guarantees, ensuring that AI agents can operate within accounts with provable security, preventing vulnerabilities like prompt injection and cross-agent hijacking. The company's early traction includes a public demonstration of its technology by sharing a read-only link to its corporate bank account via a Times Square billboard.
Who buys this
- Enterprises adopting AI agents for workflows
- Financial institutions requiring secure account sharing
- Government and defense agencies with high-security needs
- Tech companies integrating AI into their products
- Security-conscious individuals managing multiple accounts
Strengths and what to watch
Strengths
- Proprietary post-quantum cryptographic technology ensuring mathematically unbreakable security
- Founders with deep expertise in cybersecurity and national security operations
- Early validation from top-tier investors like Nexus Venture Partners and Y Combinator
Watch for
- Competition from established password managers and identity providers expanding into AI security
- Regulatory scrutiny as AI agent security becomes a higher-profile issue
- Adoption challenges in convincing users to shift from traditional password management
Recent moves
Key Information
- Founded
- 2025
Frequently Asked Questions
What is Multifactor AI?
Multifactor AI provides secure account sharing for humans and AI agents without exposing passwords. Founded by ex-CIA and NASA researchers, their Checkpoint product enables temporary read-only access to accounts using post-quantum cryptography. The Y Combinator startup raised $15M to address AI-era security risks.
How does Multifactor AI's Checkpoint work?
Checkpoint generates secure, temporary links that grant read-only access to online accounts without sharing actual credentials. This allows AI agents or humans to view account data while preventing modifications or credential theft. The system uses cryptographic proofs to maintain security against quantum computing threats.
Why is Multifactor AI different from traditional password managers?
Unlike password managers that store credentials, Multifactor AI enables secure sharing without exposing passwords. Its post-quantum cryptography protects against future threats, and its read-only access model prevents AI agents from making unauthorized changes—critical for enterprises integrating AI into workflows.
Who uses Multifactor AI's technology?
Key users include enterprises adopting AI workflows, financial institutions needing secure account sharing, government agencies, tech companies integrating AI, and security-conscious individuals. The platform addresses high-stakes scenarios where AI agents require account access without compromising security.
What makes Multifactor AI's security quantum-resistant?
The platform uses proprietary post-quantum cryptographic algorithms developed by PhD founders with national security backgrounds. These mathematically unbreakable protocols secure account access against both current threats and future quantum computing attacks, a critical feature for long-term AI security.
How was Multifactor AI validated?
The startup demonstrated security by publicly sharing a read-only bank account link via Times Square billboard. Backed by Y Combinator and $15M from Nexus Venture Partners, its approach gained early traction among enterprises needing AI-compatible security solutions beyond traditional password management.
Sources
- www.prnewswire.com — Founding team background and initial product launch
- www.prnewswire.com — Seed funding round and investor details
- multifactor.ai — Company mission and product overview