Horizon3.ai
Only Pentesting Platform Proven in Production
San Francisco, United States · Founded 2019 · $320.0M raised
- Headquarters
- San Francisco, California
- Employees
- 201–500
- Founded
- 2019
- Business Model
- B2B
- Website
- horizon3.ai
- Total Funding
- $320.0M
- Last Round
- $100.0M Series DMay 2025
- Rounds
- 9
About
Horizon3.ai is a team of US Special Operations, national security, and cybersecurity veterans on a mission to turn the map around — using the attacker's perspective to help enterprises continuously find, fix, and verify exploitable weaknesses. Their NodeZero platform autonomously executes penetration tests using AI-driven knowledge graphs, delivering the skills of a 20-year pentesting veteran at a fraction of the cost.
Summary
Horizon3.ai is a Cybersecurity company based in San Francisco, United States, founded in 2019. It has raised $320.0M in total across 9 rounds, most recently a $100.0M Series D round in May 2025. Investors include SignalFire, Craft Ventures and New Enterprise Associates.
Tech & App Stack
6 technologies & apps tracked
Create a free account — 10 credits a month to unlock the full tech & app stack, funding history, and valuations.
Sign up to view the funding chart
Create a free account — you'll get 10 credits a month to unlock funding history, valuations, and tech stacks.
Funding History
May 2025
Sign up to see all 9 rounds
Full funding history, per-round amounts, and investor participation.
Investors
Similar Companies
Cursor is the best way to code with AI, and built to make you extraordinarily productive.
Palantir Technologies builds data integration and analytics platforms (Gotham and Foundry) for go...
UiPath is an AI-enhanced end-to-end automation platform.
ML inference infrastructure for deploying and serving AI models at scale, performantly and cost-e...
AI hardware company building wafer-scale processors for deep learning training and inference
AI software engineering company building Devin, an autonomous AI coding agent capable of planning...