Where does Xiaochuan Yu work?

Xiaochuan Yu is Founder of Nebula Security.

Where did Xiaochuan Yu go to school?

Xiaochuan Yu studied at UC San Diego (Master of Science - MS, Computer Science); Y Combinator; Sun Yat-sen University (Bachelor of Engineering - BE, Computer Science).

Xiaochuan Yu

Founder

Founder at Nebula Security

La Jolla Shores, California, United States

FoundedNebula Security · YC

About

Xiaochuan Yu founded Nebula Security and previously participated in competitive hacking, including DEFCON competitions and CTF events. They hold an M.S. from UC San Diego and have published security research at USENIX Security and BlackHat.

Founder at Nebula Security YC S26

Intro paths

Xiaochuan went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.

Their group partner at YC was Ankit Gupta, General Partner at Y Combinator — the partner who ran Nebula Security's batch and knows the company first-hand. YC profile ↗

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In turn, Xiaochuan can intro founders to Nebula Security's investors below.

Nebula Security's investors · 1

Y CombinatorSan Francisco · $500K checks · since 2026

Co-founders at Nebula Security

Eten ZouCEO & Founder

Yuan TanFounder

Frank WuFounder

Experience

Nebula Security (YC S26)Co-Foundercurrent2026 — presentSan Francisco, California, United States
ZellicSecurity Reseacher2025 — 2026

Skills & more

Objective-C1Swift (Programming Language)Cyber Threat Hunting (CTH)1Operating Systems1Systems Programming2Security AutomationDebugging1Vulnerability AssessmentSecurity Architecture DesignVulnerability Research1Data Security1Data Privacy

+8 more

Security EngineeringCyber-securitySecurity ResearchApplication SecurityNetwork SecurityInformation SecurityCybersecurityVulnerability

From Xiaochuan's professional profile.

Frequently asked questions

Who is Xiaochuan Yu?: Xiaochuan Yu founded Nebula Security and previously participated in competitive hacking, including DEFCON competitions and CTF events. They hold an M.S. from UC San Diego and have published security research at USENIX Security and BlackHat.
Where does Xiaochuan Yu work?: Xiaochuan Yu is Founder of Nebula Security.
What companies did Xiaochuan Yu found?: Xiaochuan Yu founded Nebula Security.
Where did Xiaochuan Yu go to school?: Xiaochuan Yu studied at UC San Diego (Master of Science - MS, Computer Science); Y Combinator; Sun Yat-sen University (Bachelor of Engineering - BE, Computer Science).