CISO Tribune

Vendor comparison · 2 companies

Armadin vs Horizon3.ai

Armadin is a cybersecurity company providing an agentic AI, continuous offensive security platform that identifies and proves exploitable risk across the entire attack surface. 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. 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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  • Armadin
  • Horizon3.ai
Armadin vs Horizon3.ai: Products, Customers and Funding Compared
ArmadinArmadin is a cybersecurity company providing an agentic AI, continuous offensive security platform that identifies and proves exploitable risk across the entire attack surface.armadin.comHorizon3.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.ai
What it sells
  • The Ultimate Attacker[1][5]Armadin built the Ultimate Attacker to expose hidden risk before it becomes an adversarial opportunity.
  • Armadin Red[3]AI inference workloads are delivered through Armadin Red.
  • 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.
Categories
Headquarters
Not stated on its pagesSan Francisco, United States[1][11]
Founded
Not stated on its pages2019[1][11]
Ownership and funding
Not stated on its pagesPrivately held[2][3]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • October 1, 2026Armadin raised an additional $255.5 million in Series B funding, bringing its total funding to $445 million.[7]
  • March 10, 2026Armadin announced that it raised $189.9 million in Seed and Series A funding.[6]
  • 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]
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
Armadin describes its platform as architected to operate across global environments. Its data agreements include jurisdiction-specific terms for customers in regions such as the EEA, UK, Switzerland, Canada and Australia. Armadin's engineering team builds enterprise security products.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.
Last verified
November 9, 2026September 27, 2026

Where they overlap

  • Breach simulation and automated pen-testing is the primary category of both Armadin and Horizon3.ai.

Where they differ, field by field

  • Armadin lists The Ultimate Attacker and Armadin Red. Horizon3.ai lists NodeZero and Endpoint Security Effectiveness.
  • Horizon3.ai is headquartered in San Francisco, United States.
  • Horizon3.ai was founded in 2019.
  • Horizon3.ai is privately held.

How they differ

CISO Tribune files both Armadin and Horizon3.ai under Breach simulation and automated pen-testing as the primary category. Armadin sells an agentic AI, continuous offensive security platform that identifies and proves exploitable risk across the attack surface, using autonomous AI-driven attacker swarms built on red team expertise. Its products include The Ultimate Attacker and Armadin Red. Horizon3.ai sells NodeZero, an autonomous platform that executes real attack techniques in production so organizations can find exploitable weaknesses, fix them and verify the fixes. Horizon3.ai also sells Endpoint Security Effectiveness and pentesting for compliance delivered by OSCP pentesters together with NodeZero.

Horizon3.ai is headquartered in San Francisco, was founded in 2019, and is privately held. Armadin says it raised $189.9 million in Seed and Series A funding, announced March 10, 2026, and then an additional $255.5 million in Series B funding on October 1, 2026, for total funding of $445 million. Armadin's data agreements include jurisdiction-specific terms for customers in regions such as the EEA, UK, Switzerland, Canada and Australia.

Horizon3.ai says NodeZero serves customers from the Global 100 to a local hospital, and names banks, healthcare systems, energy providers, manufacturers, governments and defense contractors as organizations that rely on it. On July 29, 2026, Horizon3.ai announced an expansion of NodeZero to include AI-powered web application pentesting capabilities. On July 15, 2026, it announced it is taking part in Anthropic's Project Glasswing, an initiative focused on securing critical infrastructure.

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 Armadin and Horizon3.ai

What do Armadin and Horizon3.ai sell?
Armadin sells The Ultimate Attacker and Armadin Red. Horizon3.ai sells NodeZero and Endpoint Security Effectiveness.
Are Armadin and Horizon3.ai in the same category?
Yes. Breach simulation and automated pen-testing is the primary category of both on CISO Tribune.
Where are Armadin and Horizon3.ai headquartered?
Horizon3.ai is headquartered in San Francisco, United States.
When were Armadin and Horizon3.ai founded?
Horizon3.ai was founded in 2019.
Who owns Armadin and Horizon3.ai?
Horizon3.ai is privately held.
Who are Armadin and Horizon3.ai sold to?
Armadin describes its platform as architected to operate across global environments. From its own pages, Horizon3.ai sells mainly to security teams that want to test their defenses with real attacks in production.
What have Armadin and Horizon3.ai announced recently?
October 1, 2026: Armadin raised an additional $255.5 million in Series B funding, bringing its total funding to $445 million. 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 Armadin

Armadin is a cybersecurity company providing an agentic AI, continuous offensive security platform that identifies and proves exploitable risk across the entire attack surface. Armadin combines red team expertise with autonomous AI-driven attacker swarms to uncover real paths to compromise and to prioritize remediation.[4][5]

Armadin's platform charts the attack surface, enumerates hosts, profiles people and analyzes defenses. Armadin's attacker probes in parallel, swarming weak points and learning from each attempt.[4]

Armadin builds seasoned red team methodology into autonomous agents that model real attacker behavior. Armadin's platform has guardrails for controlled execution and scoped impact. Every validated kill chain in Armadin's platform comes with prioritized guidance. Armadin's platform is architected to operate across global environments.[4]

Armadin's team includes red teamers, AI builders and cybersecurity pioneers.

Travis is a founder and Chief Technology Officer at Armadin and leads the company's product and engineering efforts. David is responsible for defining Armadin's AI-driven architecture. Vasu leads Armadin's strategy, strategic partnerships, marketing, communications, customer success and corporate development initiatives. Frank serves as Chief Financial Officer of Armadin. Chinmaya leads Armadin's engineering team, and Greg is responsible for Armadin's product portfolio.

George Kurtz, the CEO and founder of CrowdStrike, joined the Armadin Board in 2026. Retired General Paul M. Nakasone, the former Director of the NSA, joined the Armadin Board in 2026. Ping Li, a partner at venture capital firm Accel, joined the Armadin Board in 2026. Jake Seid, co-founder of Ballistic Ventures, led Armadin's seed round and joined the Armadin Board in 2026.

Armadin has a Data Processing Agreement that governs how Armadin processes personal information on behalf of its customers. Armadin has a July 2026 cross-border data transfer framework for customer personal data. Armadin, Inc. has an End User License Agreement for its services. Armadin had an independent third-party penetration test conducted in 2026.[1][4][5]

Armadin on the record

Sources

Armadin full record

  1. [1]armadin.comArmadin · armadin.com · undated page, accessed October 7, 2026 · Tier A
  2. [2]Expert AI Cybersecurity & Cyber Defense Company | ArmadinArmadin · undated page, accessed October 7, 2026 · Tier A
  3. [3]Trust Center - ArmadinArmadin · undated page, accessed October 31, 2026 · Tier A
  4. [4]AI Cybersecurity Platform | Armadin Enterprise Grade TechnologyArmadin · undated page, accessed October 31, 2026 · Tier A
  5. [5]Armadin: AI-native cybersecurity platformArmadin · undated page, accessed October 31, 2026 · Tier A
  6. [6]Armadin Secures Record-Breaking $189.9M in Seed and Series A Funding to Combat the Era of AI-Driven HyperattacksArmadin · published March 10, 2026 · Tier A
  7. [7]Investors Back Armadin Platform Strategy with New Round of FundingArmadin · published October 1, 2026 · Tier A

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

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