Nebula Security
Nebula Security is a YC Summer 2026 (S26) company. Based in San Francisco, CA, USA; Remote. Team of 4.
About Nebula Security
Summary
Nebula Security builds an AI-powered code and cloud security platform backed by a team of competitive hackers with confirmed zero-days in Chrome and the Linux kernel. Nebu continuously monitors code and cloud infrastructure, surfaces verified vulnerabilities, and delivers merge-ready fixes, replacing periodic manual audits with always-on automated coverage. When findings are critical, the same researchers step in directly.
Go-to-market
Nebula Security sells to engineering and security teams at B2B and enterprise companies, with a sales-led motion anchored by a demo booking flow on its website.
From the Y Combinator listing
Building Mythos for everyone
Nebula Security is founded by the world’s #1 hacking team. We were the first team to build an nginx RCE and the first to root Android 17. Our co-founders include members of the world’s No. 1 CTF team, DEF CON winners, Black Hat speakers, and PhD in cybersecurity. We have won $400K in bug bounties by exploiting the Linux kernel and Chrome browser. “Audited by Nebula Security” is a mark of serious security credibility: a signal to customers, investors, and partners that your product has been reviewed by the world’s best hackers.
Facts
- B2B / B2B -> Security
- San Francisco, CA, USA; Remote
- 4
- Active
- Early
Founders (4)
- Yuan Tan
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