Where does Xiaochuan Yu work?

Xiaochuan Yu is Founder/VP of Vulnerability Research of NebuSec.

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/VP of Vulnerability Research at NebuSec

La Jolla Shores, California, United States

FoundedNebuSec · YC

Find your path to Xiaochuan

405 people in our graph share verified history with Xiaochuan — schools, employers, funds. One of them is your warm intro.

Garry TanunlockedXiaochuan: together at Y Combinator (2026)

×10Xiaochuan: together at Y Combinator

Xiaochuan: together at Sun Yat-sen University

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/VP of Vulnerability Research at NebuSec 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 NebuSec's batch and knows the company first-hand. YC profile ↗

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

NebuSec's investors · 2

Vela PartnersSan Francisco · $100K – $500K checks Y CombinatorSan Francisco · $500K checks · since 2026

Co-founders at NebuSec

Eten ZouFounder/CEO

Yuan TanFounder/CTO

Frank WuFounder/Security Research Lead

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/VP of Vulnerability Research of NebuSec.
What companies did Xiaochuan Yu found?: Xiaochuan Yu founded NebuSec.
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).