CISO Tribune

Vendor comparison · 2 companies

Horizon3.ai vs Skyhawk Security

Horizon3.ai sells NodeZero, a platform that autonomously executes real attack techniques in production environments so organizations can find exploitable weaknesses, fix them and verify the fixes. Skyhawk Security sells an agentless AI purple team platform that uses the same tools adversaries do. CISO Tribune files both under Breach simulation and automated pen-testing. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

Change the companies

Up to four companies side by side.

  • Horizon3.ai
  • Skyhawk Security
Horizon3.ai vs Skyhawk Security: Products, Customers and Funding Compared
Horizon3.aiHorizon3.ai sells NodeZero, a platform that autonomously executes real attack techniques in production environments so organizations can find exploitable weaknesses, fix them and verify the fixes.horizon3.aiSkyhawk SecuritySkyhawk Security sells an agentless AI purple team platform that uses the same tools adversaries do.skyhawk.security
What it sells
  • NodeZero[2][3][5][6][7][8][9][10][14]An autonomous platform that executes real attack techniques in production.
  • Endpoint Security Effectiveness[3][7]Tests how endpoint protections respond to real attack behavior.
  • Skyhawk Autonomous Purple Team[5]Ingests findings from a customer's CNAPP, SIEM and vulnerability management tools and runs adversary simulations in an AI-generated replica of the production environment to check whether a finding is actually exploitable.
Categories
Headquarters
San Francisco, United States[1][11]Not stated on its pages
Founded
2019[1][11]Not stated on its pages
Ownership and funding
Privately held[2][3]Privately held[3][7]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • November 5, 2026Horizon3 appointed Chris Wood as Director of Sales for Australia and New Zealand and Vivienne Horsfall as Growth Marketing Director for Asia Pacific and Japan.[13]
  • July 29, 2026Horizon3 announced an expansion of its NodeZero platform to include AI-powered web application pentesting capabilities.[14]
  • July 15, 2026Horizon3 announced it is taking part in Anthropic's Project Glasswing, an initiative focused on securing critical infrastructure.[12]
Not stated on its pages
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
From its own pages, Horizon3.ai sells mainly to security teams that want to test their defenses with real attacks in production. It names banks, healthcare systems, energy providers, manufacturers, governments and defense contractors as organizations that rely on NodeZero. Its pages describe customers ranging from the Global 100 to a local hospital.From its own pages, Skyhawk Security sells mainly to security teams and application teams that work with cloud security tools such as CNAPP, SIEM and vulnerability management. Skyhawk Security describes those teams as inundated with critical alerts. Skyhawk Autonomous Purple Team is delivered through a SaaS platform and ingests findings without requiring agents.
Last verified
September 27, 2026November 2, 2026

Where they overlap

  • Horizon3.ai and Skyhawk Security are both filed under Breach simulation and automated pen-testing.
  • Both are privately held.

Where they differ, field by field

  • Horizon3.ai's primary category is Breach simulation and automated pen-testing; Skyhawk Security's is Cloud detection and response.
  • Horizon3.ai lists NodeZero and Endpoint Security Effectiveness. Skyhawk Security lists Skyhawk Autonomous Purple Team.
  • Horizon3.ai is headquartered in San Francisco, United States.
  • Horizon3.ai was founded in 2019.

What it sells: Horizon3.ai

What NodeZero does[2][3][5][6][7][8][9][10][14]
NodeZero is described as an autonomous platform capable of executing self-directed actions to achieve an objective. Horizon3.ai says it executes real attack techniques without agents or disruption. It is delivered via multi-tenant SaaS.
What Endpoint Security Effectiveness does[3][7]
NodeZero checks for EDR presence on each host. It then executes techniques ranging from credential theft to privilege escalation and lateral movement. Every action is mapped to a MITRE ATT&CK TTP and labeled blocked or permitted.

Questions about Horizon3.ai and Skyhawk Security

What do Horizon3.ai and Skyhawk Security sell?
Horizon3.ai sells NodeZero and Endpoint Security Effectiveness. Skyhawk Security sells Skyhawk Autonomous Purple Team.
Are Horizon3.ai and Skyhawk Security in the same category?
They share Breach simulation and automated pen-testing. Horizon3.ai's primary category is Breach simulation and automated pen-testing and Skyhawk Security's is Cloud detection and response.
Where are Horizon3.ai and Skyhawk Security headquartered?
Horizon3.ai is headquartered in San Francisco, United States.
When were Horizon3.ai and Skyhawk Security founded?
Horizon3.ai was founded in 2019.
Who owns Horizon3.ai and Skyhawk Security?
Horizon3.ai is privately held. Skyhawk Security is privately held.
Who are Horizon3.ai and Skyhawk Security sold to?
From its own pages, Horizon3.ai sells mainly to security teams that want to test their defenses with real attacks in production. From its own pages, Skyhawk Security sells mainly to security teams and application teams that work with cloud security tools such as CNAPP, SIEM and vulnerability management.
What have Horizon3.ai and Skyhawk Security announced recently?
November 5, 2026: Horizon3 appointed Chris Wood as Director of Sales for Australia and New Zealand and Vivienne Horsfall as Growth Marketing Director for Asia Pacific and Japan.

About Horizon3.ai

Horizon3.ai sells NodeZero, a platform that autonomously executes real attack techniques in production environments so organizations can find exploitable weaknesses, fix them and verify the fixes.

Horizon3.ai describes the problem as one of effectiveness. Its pages say that security teams do not have a tools problem, and that many siloed security tools are not designed to work together. The company says the seams between those tools are blind spots that attackers exploit. Horizon3.ai says knowing a vulnerability exists is not enough and that teams need to know whether it is actually exploitable.[5]

NodeZero is described as an autonomous platform capable of executing self-directed actions to achieve an objective. In pentesting, those objectives include becoming Domain Admin, compromising sensitive data and gaining access to critical systems. Horizon3.ai says NodeZero executes real attack techniques without agents or disruption. Horizon3.ai says its autonomous approach is delivered via multi-tenant SaaS.[5]

Horizon3.ai describes a loop of hack, fix, verify and repeat. Its pages say teams should re-test to confirm a threat is gone after a fix. The company also describes a one-click verify tool in NodeZero that starts a targeted retest.[6]

Endpoint Security Effectiveness shows how endpoint protections respond to real attack behavior, and NodeZero checks for EDR presence on each host. Horizon3.ai also sells pentesting for compliance, delivered by OSCP pentesters together with the NodeZero platform.[6][7]

The service delivers a Penetration Test Report and a Fix Action Report.[6]

Horizon3.ai says NodeZero serves customers from the Global 100 to a local hospital. Its pages also name banks, healthcare systems, energy providers, manufacturers, governments and defense contractors as organizations that rely on NodeZero.[5][9]

Horizon3.ai was founded in 2019 and is headquartered in San Francisco, CA. Snehal Antani is its Co-Founder and CEO. The company describes its team as a mix of US Special Operations, US National Security and cybersecurity industry veterans.[4][6][7][8][10]

Horizon3.ai on the record

Sources

Horizon3.ai full record

  1. [1]About usHorizon3.ai · horizon3.ai · undated page, accessed September 27, 2026 · Tier A
  2. [2]Horizon3 raises 250m series e at 2b valuation to lead the ai vs ai cybersecurity eraHorizon3.ai · horizon3.ai · published August 3, 2026 · Tier A
  3. [3]Home | Horizon3.aiHorizon3.ai · undated page, accessed October 25, 2026 · Tier A
  4. [4]Why Continuous Exposure Management Matters for Financial ServicesHorizon3.ai · undated page, accessed October 25, 2026 · Tier A
  5. [5]The Future of Security: Our Vision | Horizon3Horizon3.ai · undated page, accessed November 5, 2026 · Tier A
  6. [6]Compliance Solutions for Cybersecurity | Horizon3Horizon3.ai · undated page, accessed November 5, 2026 · Tier A
  7. [7]Endpoint Security Effectiveness | Horizon3Horizon3.ai · undated page, accessed November 5, 2026 · Tier A
  8. [8]Identity Security Validation | Horizon3Horizon3.ai · undated page, accessed November 5, 2026 · Tier A
  9. [9]Why Our Platform Wins | Horizon3Horizon3.ai · undated page, accessed November 5, 2026 · Tier A
  10. [10]HomeECB AI Cybersecurity Mandate | NodeZero® | Horizon3Horizon3.ai · undated page, accessed November 5, 2026 · Tier A
  11. [11]The Team | Horizon3Horizon3.ai · undated page, accessed November 5, 2026 · Tier A
  12. [12]Horizon3 Joins Anthropic’s Project Glasswing to Help Defend Critical Infrastructure with the Attacker’s PerspectiveHorizon3 · published July 15, 2026 · Tier A
  13. [13]Horizon3 Expands Australia and New Zealand Team, Strengthens APJ InvestmentHorizon3 · published November 5, 2026 · Tier A
  14. [14]Horizon3’s NodeZero® AI Hacker Extends Production-Safe Autonomous Pentesting to Web ApplicationsHorizon3 · published July 29, 2026 · Tier A

Skyhawk Security full record

  1. [1]skyhawk.securitySkyhawk Security · skyhawk.security · undated page, accessed September 27, 2026 · Tier A
  2. [2]Radware launches skyhawk securitySkyhawk Security · skyhawk.security · undated page, accessed December 1, 2022 · Tier A
  3. [3]496094 68PitchBook · pitchbook.com · undated page, accessed September 27, 2026 · Tier C
  4. [4]About Us - Skyhawk SecuritySkyhawk Security · undated page, accessed October 28, 2026 · Tier A
  5. [5]Homepage - Skyhawk SecuritySkyhawk Security · undated page, accessed October 28, 2026 · Tier A
  6. [6]Skyhawk Security Strengthens Autonomous Red Team with Agentic AI, Enabling Continuous Security Control Validation - Skyhawk SecuritySkyhawk Security · published December 2, 2025 · Tier A
  7. [7]New Horizons in Cloud Security Part 2: Benchmarking and Novel Self-improving AI Framework for Maliciousness Classification Using Large Language Models - Skyhawk SecuritySkyhawk Security · undated page, accessed October 28, 2026 · Tier A
  8. [8]Platform - Skyhawk SecuritySkyhawk Security · undated page, accessed October 28, 2026 · Tier A
  9. [9]5 Reasons Why CSPM Tools are not Enough - Skyhawk SecuritySkyhawk Security · undated page, accessed November 10, 2026 · Tier A
  10. [10]Three Reasons why SIEMs are not Enough - Skyhawk SecuritySkyhawk Security · undated page, accessed November 10, 2026 · Tier A
  11. [11]The Science Behind our Security Part 1: Machine Learning - Skyhawk SecuritySkyhawk Security · undated page, accessed November 10, 2026 · Tier A
  12. [12]Skyhawk Synthesis Security Platform mentioned in the 2023 Gartner® Emerging Tech: Security — Cloud Investigation and Response Automation Offers Transformation Opportunities - Skyhawk SecuritySkyhawk Security · undated page, accessed November 10, 2026 · Tier A
  13. [13]Essential Steps to Improve Your AWS Cloud Security | SkyhawkSkyhawk Security · undated page, accessed November 10, 2026 · Tier A
  14. [14]The Science Behind our Security - Part 2: The Models - Skyhawk SecuritySkyhawk Security · undated page, accessed November 10, 2026 · Tier A

Spot a factual error? Request a correction.