
Technology
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Cyber Security
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YC W26
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Valuation:
Undisclosed

Last Updated:
March 24, 2026

Builds a unified cybersecurity platform that discovers, monitors, and defends organizations' Internet presence across DNS, BGP, TLS, and application layers. Invented the MPIC standard now securing all major HTTPS connections worldwide.
MPIC standard adopted by CA/Browser Forum (mandated March 2025). Multi-layer monitoring across DNS, BGP, TLS, JavaScript. Actionable alerts with root cause analysis and remediation recommendations. Targeting healthcare, cryptocurrency, and banking/fintech verticals.
Active R&D in ML-driven anomaly detection and multi-layer signal correlation. Open MPIC Project provides open-source implementations used in production by 1.5M+ certificates. Princeton ecosystem ties for deep-tech funding. Prateek Mittal's research also enhanced security of deployed LLMs (GPT 3.5 and GPT4V at OpenAI).
Real-time anomaly detection across DNS, BGP, TLS, and application layers to identify network outages, hijacks, and infrastructure compromises before they escalate.
It watches every layer of your Internet connection simultaneously so it can spot an attack the moment something looks even slightly off, like a security guard with eyes on every door at once.
It's like having a doctor who checks your blood pressure, heart rate, temperature, and bloodwork all at once instead of four separate specialists who never talk to each other.
Multi-Perspective Issuance Corroboration (MPIC) uses distributed vantage points and ML-driven pattern recognition to detect and block fraudulent TLS certificate issuance attempts in real time.
It double-checks every new website security certificate from multiple locations around the world so no one can trick the system into issuing a fake one.
It's like requiring three different notaries in three different cities to independently verify your identity before you can get a passport, so no single forger can fool the system.
Automated discovery and continuous mapping of an organization's external attack surface using ML-driven asset enumeration, dependency analysis, and risk scoring across APIs, web services, and infrastructure.
It automatically finds every door, window, and hidden entrance to your online presence that you didn't even know existed, then tells you which ones are unlocked.
It's like hiring a drone to fly around your entire property every hour and flag every new crack, open gate, or suspicious person—instead of walking the perimeter yourself once a quarter with a clipboard.
Henry Birge-Lee (Princeton ECE) invented MPIC, is a member of the CA/Browser Forum, and founded the Open MPIC Project. Grace Cimaszewski is a Princeton PhD who worked with the CA/Browser Forum to turn research into ecosystem-wide standards, with visiting researcher stints at Google and Corelight Labs. Prof. Prateek Mittal (Princeton) is an ACM Grace Hopper Award recipient, IEEE Fellow, and ACM Distinguished Member whose research secured every HTTPS connection worldwide and enhanced LLM security at OpenAI. Among the most credentialed founding teams possible for this specific domain.