CISO Tribune

Vendor comparison · 2 companies

Horizon3.ai vs XM Cyber

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. XM Cyber sells a platform that continuously surfaces every validated exposure that forms real attack paths. 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.

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  • Horizon3.ai
  • XM Cyber
Horizon3.ai vs XM Cyber: 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.aiXM CyberXM Cyber sells a platform that continuously surfaces every validated exposure that forms real attack paths.xmcyber.com
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.
  • Continuous Exposure Management Platform[4][5]Surfaces validated exposures that form real attack paths.
  • XM Attack Graph Analysis™Maps viable exposures into attack paths that lead to business-critical assets.
Categories
Headquarters
San Francisco, United States[1][11]Herzliya, Israel[3]
Founded
2019[1][11]Not stated on its pages
Ownership and funding
Privately held[2][3]Owned by Schwarz Group since 2021[2][4][15]
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: listed, seen November 10, 2026[15]
  • 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, XM Cyber does not state organisation size, industries or deployment models it targets. Its business initiatives menu names Operational Technology (OT), Mergers and Acquisitions, Ransomware Readiness and Executive Risk Reporting, but the pages do not describe these as customer segments or buyer roles. This is our reading of the pages, not a recommendation.
Last verified
September 27, 2026November 2, 2026

Where they overlap

  • Horizon3.ai and XM Cyber are both filed under Breach simulation and automated pen-testing.

Where they differ, field by field

  • Horizon3.ai's primary category is Breach simulation and automated pen-testing; XM Cyber's is Exposure prioritisation and CTEM.
  • Horizon3.ai lists NodeZero and Endpoint Security Effectiveness. XM Cyber lists Continuous Exposure Management Platform and XM Attack Graph Analysis™.
  • Horizon3.ai is headquartered in San Francisco, United States. XM Cyber is headquartered in Herzliya, Israel.
  • Horizon3.ai was founded in 2019.
  • Horizon3.ai is privately held. XM Cyber is owned by Schwarz Group, since 2021.

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.

What it sells: XM Cyber

What XM Attack Graph Analysis™ does
XM Attack Graph Analysis™ maps all viable exposures into attack paths from the external attack surface, across on-prem and cloud, to business-critical assets. The platform takes a digital twin approach to prioritize exposures validated against exploitability and reachability conditions, taking into account compensating security controls.

Questions about Horizon3.ai and XM Cyber

What do Horizon3.ai and XM Cyber sell?
Horizon3.ai sells NodeZero and Endpoint Security Effectiveness. XM Cyber sells Continuous Exposure Management Platform and XM Attack Graph Analysis™.
Are Horizon3.ai and XM Cyber 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 XM Cyber's is Exposure prioritisation and CTEM.
Where are Horizon3.ai and XM Cyber headquartered?
Horizon3.ai is headquartered in San Francisco, United States. XM Cyber is headquartered in Herzliya, Israel.
When were Horizon3.ai and XM Cyber founded?
Horizon3.ai was founded in 2019.
Who owns Horizon3.ai and XM Cyber?
Horizon3.ai is privately held. XM Cyber is owned by Schwarz Group, since 2021.
Who are Horizon3.ai and XM Cyber 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, XM Cyber does not state organisation size, industries or deployment models it targets.
What have Horizon3.ai and XM Cyber 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

XM Cyber full record

  1. [1]xmcyber.comXM Cyber · xmcyber.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]Schwarz group acquires israeli hybrid cloud cybersecurity innovator xm cyberXM Cyber · xmcyber.com · published November 22, 2021 · Tier A
  3. [3]0,7340,L 3734737,00Calcalist · calcalistech.com · published March 23, 2018 · Tier B
  4. [4]Continuous Exposure Management | XM CyberXM Cyber · undated page, accessed October 30, 2026 · Tier A
  5. [5]Use case- Audit & ComplianceXM Cyber · undated page, accessed November 10, 2026 · Tier A
  6. [6]Platform | XM CyberXM Cyber · undated page, accessed November 10, 2026 · Tier A
  7. [7]Security Controls MonitoringXM Cyber · undated page, accessed November 10, 2026 · Tier A
  8. [8]Vulnerability Risk ManagementXM Cyber · undated page, accessed November 10, 2026 · Tier A
  9. [9]XM Cyber for Continuous Exposure Prioritization | XM CyberXM Cyber · undated page, accessed November 10, 2026 · Tier A
  10. [10]Safely Adopt AI Without Introducing RiskXM Cyber · undated page, accessed November 10, 2026 · Tier A
  11. [11]Case Studies | XM CyberXM Cyber · undated page, accessed November 10, 2026 · Tier A
  12. [12]Security, Compliance and Privacy | XM CyberXM Cyber · undated page, accessed November 10, 2026 · Tier A
  13. [13]Solution Briefs | XM CyberXM Cyber · undated page, accessed November 10, 2026 · Tier A
  14. [14]XM Cyber Named a Challenger in the Gartner® Magic Quadrant™ for Exposure Assessment Platforms | XM CyberXM Cyber · published November 13, 2025 · Tier A
  15. [15]XM Cyber Exposure Management Platform Reviews 2026G2 · undated page, accessed November 10, 2026 · Tier C

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