CISO Tribune

Vendor comparison · 2 companies

Horizon3.ai vs Pentera

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. Pentera sells a platform that combines AI-powered adversarial testing, risk-based prioritization, and automated remediation into one workflow. 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
  • Pentera
Horizon3.ai vs Pentera: 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.aiPenteraPentera sells a platform that combines AI-powered adversarial testing, risk-based prioritization, and automated remediation into one workflow.pentera.io
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.
  • Pentera Platform[4][8]A platform that combines AI-powered adversarial testing, risk-based prioritization, and automated remediation.
  • Pentera Resolve[4][10]Remediation workflows for validated findings.
  • Automated Pentesting[4][10]Automated pentests that teams launch whenever their environment changes.
  • Automated Red Teaming[4][11]Software-driven adversary emulation on demand.
  • Security Validation Advisory (SVA)[6]Practitioners who guide and refine a customer's exposure validation strategy.
Categories
Headquarters
San Francisco, United States[1][11]Boston, United States
Founded
2019[1][11]2015[1][9]
Ownership and funding
Privately held[2][3]Privately held[2][4][5][6][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: listed, seen November 3, 2026[7]
  • 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, Pentera sells mainly to security teams that want to test their defenses against real attacks, whether or not they have a red team. Pentera says organizations without dedicated red team resources and existing red teams can both use its automated red teaming. Pentera says SecVal gives the CISO fresh data on the true impact of threats on the business. Its advisory service draws on experience across financial services, healthcare, manufacturing and critical infrastructure. Pentera says its platform supports every phase of CTEM, so programs built around that approach are a stated focus.
Last verified
September 27, 2026November 2, 2026

Where they overlap

  • Breach simulation and automated pen-testing is the primary category of both Horizon3.ai and Pentera.
  • Both are headquartered in the United States.
  • Both are privately held.

Where they differ, field by field

  • Horizon3.ai lists NodeZero and Endpoint Security Effectiveness. Pentera lists Pentera Platform, Pentera Resolve, Automated Pentesting, Automated Red Teaming and Security Validation Advisory (SVA).
  • Horizon3.ai is headquartered in San Francisco, United States. Pentera is headquartered in Boston, United States.
  • Horizon3.ai was founded in 2019. Pentera was founded in 2015.

How they differ

CISO Tribune files both Horizon3.ai and Pentera under Breach simulation and automated pen-testing, and both are privately held. Horizon3.ai is headquartered in San Francisco and was founded in 2019, while Pentera is headquartered in Boston and was founded in 2015. Pentera says its growth is supported by investors including Evolution Equity Partners, Insight Partners, Blackstone, and Farallon Capital Management.

Horizon3.ai sells NodeZero, an autonomous platform that executes real attack techniques in production, delivered via multi-tenant SaaS. It also sells Endpoint Security Effectiveness, which labels each action as blocked or permitted, and pentesting for compliance delivered by OSCP pentesters with NodeZero. Pentera sells the Pentera Platform, which combines AI-powered adversarial testing, risk-based prioritization, and automated remediation. Its other offerings are Pentera Resolve for remediation workflows, Automated Pentesting, Automated Red Teaming, and Security Validation Advisory.

Horizon3.ai names banks, healthcare systems, energy providers, manufacturers, governments and defense contractors as organizations that rely on NodeZero. Pentera describes advisory experience across financial services, healthcare, manufacturing and critical infrastructure. On July 29, 2026, Horizon3.ai announced AI-powered web application pentesting for NodeZero, and on July 15, 2026, it announced it is taking part in Anthropic's Project Glasswing. Pentera says it has teams across North America, Europe, and Asia-Pacific.

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: Pentera

What Pentera Platform does[4][8]
The Pentera Platform automates exposure management from find to fix. Proven security risks found during adversarial testing move directly into Pentera's automated remediation. Findings from Pentera Core, Cloud and Surface are aggregated into a single, unified view.
What Pentera Resolve does[4][10]
Pentera Resolve mobilizes remediation through automated workflows. Teams consolidate findings, assign ownership, route tickets, track SLAs, and automatically retest fixes.
What Automated Pentesting does[4][10]
Automated pentesting helps teams test continuously, validate real exploitable exposure, and measure risk reduction over time. Teams can launch pentests without waiting for consultants, scheduling engagements, or adding headcount. Tests can start with a few clicks, a scheduled scenario, or a natural-language prompt through an LLM via Pentera's MCP server.
What Automated Red Teaming does[4][11]
Pentera's automated red teaming replicates real-world attacker behavior on demand and at enterprise scale. Pentera says it is designed to expand access to adversarial testing, not replace it.
What Security Validation Advisory (SVA) does[6]
Security Validation Advisory (SVA) draws on insights from thousands of enterprise customers and decades of hands-on experience in penetration testing, red teaming, and offensive security consulting. Customers work directly with offensive security practitioners who guide and refine their exposure validation strategy.

Questions about Horizon3.ai and Pentera

What do Horizon3.ai and Pentera sell?
Horizon3.ai sells NodeZero and Endpoint Security Effectiveness. Pentera sells Pentera Platform, Pentera Resolve, Automated Pentesting, Automated Red Teaming and Security Validation Advisory (SVA).
Are Horizon3.ai and Pentera in the same category?
Yes. Breach simulation and automated pen-testing is the primary category of both on CISO Tribune.
Where are Horizon3.ai and Pentera headquartered?
Horizon3.ai is headquartered in San Francisco, United States. Pentera is headquartered in Boston, United States.
When were Horizon3.ai and Pentera founded?
Horizon3.ai was founded in 2019. Pentera was founded in 2015.
Who owns Horizon3.ai and Pentera?
Horizon3.ai is privately held. Pentera is privately held.
Who are Horizon3.ai and Pentera 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, Pentera sells mainly to security teams that want to test their defenses against real attacks, whether or not they have a red team.
What have Horizon3.ai and Pentera 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

Pentera full record

  1. [1]About usPentera · pentera.io · undated page, accessed September 27, 2026 · Tier A
  2. [2]Pentera secures 60m to lead security validation market consolidation and drive next phase of growth 302399599Pentera via PR Newswire · prnewswire.com · published March 12, 2025 · Tier A
  3. [3]Pentera nabs 60m at a 1b valuation to build simulated network attacks to train security teamsTechCrunch · techcrunch.com · published March 12, 2025 · Tier B
  4. [4]Pentera | Exposure Validation Platform | AI-Driven TestingPentera · undated page, accessed October 27, 2026 · Tier A
  5. [5]Red Team & Offensive Security Services | PenteraPentera · undated page, accessed October 27, 2026 · Tier A
  6. [6]Security Validation Advisory & Cyber Risk Consulting | PenteraPentera · undated page, accessed October 27, 2026 · Tier A
  7. [7]Pentera Reviews 2026: Details, Pricing, & Features - G2G2 · undated page, accessed October 27, 2026 · Tier C
  8. [8]Pentera | Security Validation Platform for Exposure ReductionPentera · undated page, accessed November 3, 2026 · Tier A
  9. [9]About Pentera | Proactive Security ValidationPentera · undated page, accessed November 3, 2026 · Tier A
  10. [10]Automated Pentesting - PenteraPentera · undated page, accessed November 3, 2026 · Tier A
  11. [11]Red Teaming - PenteraPentera · undated page, accessed November 3, 2026 · Tier A
  12. [12]AI-Native Web Application Testing - PenteraPentera · undated page, accessed November 3, 2026 · Tier A
  13. [13]Automated Threat-Led Penetration Testing (TLPT) - PenteraPentera · undated page, accessed November 3, 2026 · Tier A
  14. [14]What Is Automated Security Validation (ASV)?Pentera · undated page, accessed November 3, 2026 · Tier A

Spot a factual error? Request a correction.