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Horizon 3 AI

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Provides an autonomous SaaS platform for continuous penetration testing and vulnerability management to help organizations proactively secure their networks

San Francisco, United StatesFounded 2019Cybersecurity
Valuation $1–2.5B Last recorded · 2026
Revenue $10–50M Latest reported FY
Headcount 100–500 Current team size
Total funding $100–500M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Horizon 3 AI and the history behind them.

About Horizon 3 AI

Horizon3.ai is a cybersecurity startup specializing in autonomous penetration testing (pentesting) solutions. Founded in 2019 and headquartered in San Francisco, CA, the company offers a Software-as-a-Service (SaaS) platform called NodeZero. This platform allows businesses to simulate cyber-attacks on their own systems to identify vulnerabilities and ineffective security measures. Unlike traditional pentesting methods, NodeZero is self-service, meaning it doesn't require ongoing human intervention or the installation of persistent software agents, making it safe to use in live production environments.

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The primary clients of Horizon3.ai are enterprises that need to ensure their cybersecurity defenses are robust and compliant with industry standards. This includes companies across various sectors such as finance, healthcare, and technology, who are particularly concerned about safeguarding sensitive data and meeting regulatory requirements like PCI DSS (Payment Card Industry Data Security Standard).

Horizon3.ai operates in the cybersecurity market, which is growing rapidly due to increasing cyber threats and regulatory pressures. The company's business model is subscription-based, where clients pay for access to the NodeZero platform on an annual or monthly basis. This recurring revenue model provides a steady income stream and allows Horizon3.ai to continuously update and improve its services.

The company makes money by offering different tiers of service, which may include basic vulnerability assessments, advanced threat simulations, and compliance-focused pentesting. By helping clients identify and fix exploitable vulnerabilities, Horizon3.ai adds significant value, enabling businesses to allocate their cybersecurity budgets more effectively.

In summary, Horizon3.ai leverages its expertise in cybersecurity and national security to offer an innovative, autonomous pentesting solution that helps enterprises improve their security posture and meet compliance requirements.

Source: Dealroom company data

At a glance

Founded
2019
Headquarters
San Francisco, United States
Sector
Cybersecurity
Power Law
Unicorn$1–10B valuation tierColt$25–100M revenue

Investors

7 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed2 investors entered at this stage

Series B and later5 investors entered at this stage

Team profiled 13 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 3 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
14 countries with
team presence
🇺🇸 United States82%
🇳🇱 Netherlands6.8%
🇬🇧 United Kingdom4.7%
🇦🇺 Australia1.5%
🇨🇦 Canada0.9%
Top 5 of 14 shown
Web traffic by country
130K monthly visits
across markets
🇺🇸 United States54.5%
🇨🇦 Canada2.7%
🇹🇼 Taiwan2.7%
🇬🇧 United Kingdom2.7%
🇳🇬 Nigeria2.2%
Top 5 markets shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Horizon 3 AI on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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