Company profile

Horizon3.ai

AI-Native Proactive Security

Industry
Computer and Network Security
Employees
498
Headquarters
San Francisco, CA
Founded
2019
LinkedIn followers
30,826
Office locations
2

Horizon3.ai company summary

Horizon3.ai is a company in the Computer and Network Security industry, headquartered in San Francisco, CA, founded in 2019. On LinkedIn the company has around 498 employees and 30,826 followers. The company lists 2 office locations. Its listed specialties include cybersecurity, penetrationtesting, AI, purpleteams, infosec.

What technology does Horizon3.ai use?

No technologies detected yet. Warmrank rechecks company websites on a rolling basis.

About Horizon3.ai

Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up? And, how do we withstand the onslaught of AI-powered attacks? Horizon3.ai’s NodeZero® shifts the advantage from attackers to defenders by giving organizations the power to fight AI with AI. The Proactive Security Platform autonomously tests your defenses at machine speed, safely finds and prioritizes exploitable attack paths, instantly verifies fixes, and drives a continuous loop so you can prove you’re resilient, not just hope you are. NodeZero, the World’s Best AI Hacker™, was built by an elite team of U.S. cyber veterans and has honed its skills over 225K production-safe tests, more than all manual pentests in history. More than 5,000 organizations including the NSA, CISA, Fortune 100 giants, and major healthcare providers trust Horizon3.ai to prioritize what matters and prove they’re ready for what’s next. Horizon3.ai has been recognized by Fast Company as one of the World’s Most Innovative Companies in 2026. The company ranked #3 overall on the 2025 Deloitte Technology Fast 500 and was named the #1 cybersecurity company on the Inc. 5000 in 2025. It has also been named to the Fortune Cyber 60 in both 2023 and 2025 and is a two-time Black Unicorn Award winner.

Specialties

cybersecuritypenetrationtestingAIpurpleteamsinfosecmachinelearningdatasecurityautonomouspentestingattack surface managementred teamsoffensive securitypentestingsecurity validationsecurity verificationexploitable vulnerabilities

Where is Horizon3.ai located?

Horizon3.ai lists 2 office locations.

San Francisco, CA, USHQ
Durham, NC, US

Compare companies similar to Horizon3.ai

More companies in Computer and Network Security.

CompanyIndustryEmployeesFoundedHeadquarters
Horizon3.ai
horizon3.ai
Computer and Network Security4982019San Francisco, CA
Fortinet Federal
fortinet.com
Computer and Network Security16,440-Sunnyvale, CA
Cloudflare
cloudflare.com
Computer and Network Security8,3482009San Francisco, California
Hack The Box
hackthebox.com
Computer and Network Security2,2972017Folkestone, Kent
Hacking Articles
hackingarticles.in
Computer and Network Security1452010Delhi, Delhi
OffSec
offsec.com
Computer and Network Security1,1422006New York, NY
Kaspersky
kaspersky.com
Computer and Network Security4,6001997Stadtkreis 1 Altstadt, Zurich
Trellix
trellix.com
Computer and Network Security3,8322022Plano, Texas
ISC2
isc2.org
Computer and Network Security1,2681989Alexandria, Virginia
EC-Council
eccouncil.org
Computer and Network Security1,602-Albuquerque, New Mexico
Check Point Software
checkpoint.com
Computer and Network Security8,5681993Redwood City, California

Frequently asked questions about Horizon3.ai

What does Horizon3.ai do?

Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up? And, how do we withstand the onslaught of AI-powered attacks? Horizon3.ai’s NodeZero® shifts the advantage from attackers to defenders by giving organizations the power to fight AI with AI. The Proactive Security Platform autonomously tests your defenses at machine speed, safely finds and prioritizes exploitable attack paths, instantly verifies fixes, and drives a continuous loop so you can prove you’re resilient, not just hope you are. NodeZero, the World’s Best AI Hacker™, was built by an elite team of U.S. cyber veterans and has honed its skills over 225K production-safe tests, more than all manual pentests in history. More than 5,000 organizations including the NSA, CISA, Fortune 100 giants, and major healthcare providers trust Horizon3.ai to prioritize what matters and prove they’re ready for what’s next. Horizon3.ai has been recognized by Fast Company as one of the World’s Most Innovative Companies in 2026. The company ranked #3 overall on the 2025 Deloitte Technology Fast 500 and was named the #1 cybersecurity company on the Inc. 5000 in 2025. It has also been named to the Fortune Cyber 60 in both 2023 and 2025 and is a two-time Black Unicorn Award winner.

How many employees does Horizon3.ai have?

Horizon3.ai has around 498 employees on LinkedIn.

Where is Horizon3.ai headquartered?

Horizon3.ai is headquartered in San Francisco, CA.

Where does Horizon3.ai have offices?

Horizon3.ai lists 2 office locations, including San Francisco, CA, US; Durham, NC, US.

When was Horizon3.ai founded?

Horizon3.ai was founded in 2019.

Build a lead list from companies like Horizon3.ai

Describe your ICP or import a CSV. Warmrank finds matching companies, enriches contacts with verified emails, and tracks every lead.