Company overview

The NodeZero® platform empowers your organization to continuously find, fix, and verify your exploitable attack surface. Reduce your security risk by autonomously finding weaknesses in your network, knowing how to prioritize and fix them, and immediately verifying that your fixes work. NodeZero delivers production-safe autonomous pentests and other key assessment operations that scale across your largest internal, external, cloud, and hybrid cloud environments. No required agents, no code to write, and no consultants to hire. We are a fusion of former U.S. Special Operations cyber operators, startup engineers, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools, false positives resulting in alert fatigue, blind spots, "checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants.
Founded in 2019
San Francisco, California, USA
336 employees (18 in marketing)
81% recommend to a friend
84% positive business outlook

Salaries

Typical salary range

$157,250 – $166,500

/ yr

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People

Hiring activity

Open marketing jobs over time

19 open now

Headcount trend

Company growth over the last 12 months

Headcount +76.7% year over year

Funding

Total funding

$178.5M

Last raise

Series Unknown, 2 months ago

Funding history

Jan 2026

Venture Round Horizon3.Ai

May 2025

Series D Horizon3.Ai · $100M

Aug 2023

Series C Horizon3.Ai · $40M

Oct 2021

Series B Horizon3.Ai · $30M

Feb 2021

Series A Horizon3.Ai · $5M

Jan 2020

Seed Round Horizon3.Ai · $3.5M

Audience

Monthly website visitors
82.6K
Month over month-2.8%
Quarter over quarter+9.2%
Top sourceDirect (47.9%)
Ad budget per month$76.6K
Average search rank49.6
Traffic source mix
Direct
47.9%
Search
41.7%
Referral
6.7%
Social
2.6%
Paid referral
1.1%

LinkedIn followers

Follower count and growth

Total followers

26.3K

12-mo growth

+73.2%

Monthly growth

+3.7%

News

Links