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NebuSec launch: what they're building and where to launch next

FoxPlug writes launch posts from what a startup ships and matches it to the launch communities that fit it. This page shows what NebuSec is building and where it could launch next; if it is your startup, start free below.

What they're building

Autonomous AI defense system for cyber attack

Batch
Y Combinator Summer 2026
Industry
B2B
Team size
4
Based
San Francisco, CA, USA; Remote

nebusec.ai ↗

See their funding details ↗

NebuSec on the record

What they shipped

  • From its YC profile: NebuSec 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 NebuSec” 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. (source)
  • 4 Hacker News stories link to nebusec.ai. (source)

Timeline

  1. 2026-07-23: Launch YC post "Nebula Security: Bringing beyond Mythos protection to your product", tagline "#enterprise #cybersecurity #security #pentest #b2b", 12 upvotes when read. (source)
  2. 2026-07-10: "GhostLock, a stack-UAF that has existed in all Linux distributions for 15 years" on Hacker News by djfergus, 104 points and 6 comments. (source)
  3. 2026-07-08: "We won $92,337 bug bounty using a single kernel 0-day" on Hacker News by etenal, 31 points and 9 comments. (source)

Other B2B software launches on FoxPlug

  • ByteAsk: The AI coding agent for C and C++
  • Callbook AI: AI collections agency for late stage portfolios
  • CarSignal: The AI Operating System for Auto Shops.

Where else to launch NebuSec

  • Product Hunt ↗
    Self-promotion allowedFree
  • Hacker News (Show HN) ↗
    Self-promotion allowed, within the community's rules
    Audience: Hacker News readers; engineers, technical founders, infra-curious people
  • Indie Hackers Forum ↗
    Self-promotion allowed
    Audience: IndieHackers; bootstrapped solo founders sharing revenue and behind-the-scenes
  • Demand Curve ↗
    Self-promotion allowed, within the community's rules
    Audience: Slack community; tight-knit, pseudo-private peer group
  • Dev Hunt ↗
    Self-promotion allowedFree
  • No Code Founders ↗
    Self-promotion allowed, within the community's rules
    Audience: Slack community; tight-knit, pseudo-private peer group
  • OnlineGeniuses ↗
    Self-promotion allowed, within the community's rules
    Audience: Slack community; tight-knit, pseudo-private peer group
  • Product Makers ↗
    Self-promotion allowed, within the community's rules
    Audience: Slack community; tight-knit, pseudo-private peer group

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Featured on FoxPlug: NebuSec