Horizon3.ai specializes in cybersecurity by offering NodeZero, a SaaS platform for autonomous penetration testing. It lets enterprises simulate cyber-attacks on their own systems in a self-service way, without installing persistent agents, and without ongoing human intervention. The platform works by running security-focused attack simulations in production environments to uncover exploitable vulnerabilities and weak controls, delivering vulnerability assessments, threat simulations, and compliance-oriented testing through tiered subscription plans. This approach differentiates Horizon3.ai from traditional pentesting by being self-service, agentless, and safe to run in live environments, while targeting enterprise customers that must meet standards such as PCI DSS. The company aims to help organizations improve their security posture, prioritize remediation, and maintain regulatory compliance by continuously identifying and fixing weaknesses.
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Company Size
501-1,000
Company Stage
Series E
Total Funding
$437M
Headquarters
San Francisco, CA
Founded
2019
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Horizon3 releases NodeZero integration for Palo Alto Networks Cortex XSOAR. Horizon3 has announced the availability of a NodeZero integration with Palo Alto Networks' Cortex XSOAR, now listed on the Cortex Marketplace. The companies said the integration is designed to bring NodeZero's high- and critical-severity findings on vulnerabilities and other weaknesses into Cortex XSOAR as incidents, allowing security teams to use exploitability information when prioritising remediation and to retest issues after fixes are applied. In the release, Horizon3 said security teams often have large volumes of vulnerability data and automation tools, but lack evidence indicating which weaknesses attackers can exploit and whether remediation efforts have reduced risk. According to the companies, NodeZero autonomously tests environments to identify vulnerabilities and attack paths, then supplies evidence and remediation guidance. Cortex XSOAR ingests open high and critical findings and can use existing playbooks to enrich and route incidents and orchestrate remediation tasks. After changes are made, teams can use NodeZero's "1-Click Verify" feature to retest eligible findings. "Organisations have invested heavily in security tools and automation. The opportunity now is to prove those investments are producing better security outcomes," said Snehal Antani, CEO and co-founder of Horizon3. "By bringing NodeZero's exploitability evidence into Cortex XSOAR, teams can prioritize what to fix based on what testing revealed, automate remediation, and verify that the outcome changed. It gives leaders evidence that their defences are working and their security investments are delivering measurable value." "Effective security orchestration starts with high-quality inputs," said Daniele Di Mattia, VP, GTM Strategy & Operations at Palo Alto Networks. "NodeZero adds attacker-validated exploitability context to Cortex XSOAR, helping security teams focus automation and remediation on the weaknesses that matter most. Together, we're helping customers turn better security context into faster, more informed action through the workflows they already use." The release positioned the integration as supporting a repeatable "Find, Fix, Verify, Repeat" workflow, with scheduled testing intended to help organisations identify exploitable exposures and confirm remediation as environments change. The companies said the integration is certified by Palo Alto Networks and available on the Cortex Marketplace.
Horizon3 announces NodeZero integration with Palo Alto Networks Cortex XSOAR. October 27, 2026 New Cortex Marketplace integration brings evidence of exploitability into automated remediation and verification workflows. SAN FRANCISCO, October 27, 2026 - Horizon3, the AI-native proactive security leader, today announced the availability of its NodeZero(R) integration with Palo Alto Networks Cortex XSOAR on the Cortex Marketplace. The integration brings NodeZero's high and critical findings on security vulnerabilities and other weaknesses into Cortex XSOAR as actionable incidents, helping teams use exploitability evidence to prioritize remediation, orchestrate the work, and return to NodeZero to verify fixes. Security teams have extensive vulnerability data and powerful automation to orchestrate remediation at scale. What they often lack is evidence showing which vulnerabilities and weaknesses attackers can actually exploit and whether remediation eliminated the underlying risk. The NodeZero integration for Cortex XSOAR connects those capabilities, bringing pentest evidence into orchestrated remediation. NodeZero autonomously tests environments to identify security vulnerabilities and other weaknesses, map attack paths, and provide evidence of impact and remediation guidance. Cortex XSOAR ingests high and critical open findings identified by NodeZero as incidents. Existing automation and playbooks can then enrich, route, track, and orchestrate remediation. After a fix is implemented, teams can use NodeZero 1-Click Verify to retest eligible findings and determine whether they remain exploitable. "Organizations have invested heavily in security tools and automation. The opportunity now is to prove those investments are producing better security outcomes," said Snehal Antani, CEO and co-founder of Horizon3. "By bringing NodeZero's exploitability evidence into Cortex XSOAR, teams can prioritize what to fix based on what testing revealed, automate remediation, and verify that the outcome changed. It gives leaders evidence that their defenses are working and their security investments are delivering measurable value." "Effective security orchestration starts with high-quality inputs," said Daniele Di Mattia, VP, GTM Strategy & Operations at Palo Alto Networks. "NodeZero adds attacker-validated exploitability context to Cortex XSOAR, helping security teams focus automation and remediation on the weaknesses that matter most. Together, we're helping customers turn better security context into faster, more informed action through the workflows they already use." How the integration works: from proven exploitability to verified remediation. The integration enables a continuous workflow across NodeZero and Cortex XSOAR: * Find: NodeZero autonomously identifies security vulnerabilities, other weaknesses, and attack paths. High- and critical-severity findings are automatically ingested as actionable incidents, complete with affected asset data, exploitation evidence, and clear remediation guidance. * Fix: Cortex XSOAR accelerates response by enriching incidents with asset context, routing them to the right teams, and leveraging existing playbooks to automate remediation across security and IT systems. * Verify: After remediation, teams can use NodeZero 1-Click Verify to retest the finding and confirm whether it is no longer exploitable. Because Cortex XSOAR ingests open vulnerabilities from NodeZero, successfully remediated weaknesses stop returning as open incidents, while weaknesses that remain exploitable continue to surface for action. * Repeat: Scheduled testing and automated workflows help organizations continually identify exploitable exposures, remediate what matters, and verify outcomes as environments change. As AI accelerates the speed at which attackers can discover and exploit weaknesses, defenders have less time to respond. Security teams need greater confidence that they are proactively fixing what matters and their remediation efforts are effective. By continuously identifying exploitable attack paths, driving remediation, and verifying that fixes worked, NodeZero and Cortex XSOAR help organizations build continuous resilience through a repeatable Hack, Fix, Verify, Repeat operating model. The NodeZero integration for Cortex XSOAR is certified by Palo Alto Networks and available now on the Cortex Marketplace. About Horizon3. Horizon3, the AI-Native Proactive Security Company behind NodeZero(R), shifts the advantage from attackers to defenders by giving organizations the power to fight AI with AI. NodeZero, the World's Best AI Hacker(TM), autonomously tests defenses at machine speed, safely uncovers and prioritizes exploitable attack paths, instantly verifies fixes, and drives a continuous hack, fix, verify loop. More than 7,000 organizations, including global defense agencies, Fortune 10 enterprises, multinational banks, and major healthcare providers, trust Horizon3 for security they can prove. Horizon3 was recently named the Fastest Growing Cybersecurity Company in North America by the Deloitte Technology Fast 500 and named one of the Most Innovative companies by Fast Company in 2026. Follow Horizon3 on LinkedIn and X.
San Francisco-based Horizon3 opens ASEAN headquarters in Singapore, backed by EDBI, SG Growth Capital. Horizon3, a U.S. security company that sells AI-driven proactive testing software, will establish its ASEAN headquarters and a regional center of excellence in Singapore. In a statement on Monday, San Francisco-based Horizon 3 said the expansion is backed by new investments from EDBI and SG Growth Capital, the strategic investment platform set up by the Singapore Economic Development Board and Enterprise Singapore. The company said the Singapore base will also support its operations in Australia and Japan, and that it will add local staff across sales, customer and partner operations. Horizon3 said the expansion follows its $250 million Series E round, announced in August 2026 at a valuation of more than $2 billion. Horizon3 said the move responds to growing demand across Southeast Asia for continuous, evidence-based security testing as AI-driven attacks become faster and more sophisticated. The company's NodeZero platform can test a customer's live network for exploitable attack paths, and can recommends fixes and confirm the result. This can replace periodic testing with continuous validation, Horizon3 noted. Snehal Antani, CEO and co-founder of Horizon3, said boards can no longer rely on confidence or compliance checklists and must be able to prove resilience. AI is compressing attack timelines from months to hours, so security leaders need to check continuously risks and the quality of fixes. Gareth Cox, vice president for Asia-Pacific and Japan at Horizon3, said the company chose Singapore because it has a concentration of financial institutions, critical infrastructure operators, and regional headquarters. Singapore also features a forward-looking direction on cyber resilience and AI governance. He also said Singapore would serve as a base for Malaysia, Indonesia, Thailand, and other markets. Horizon3 said the Singapore operation will expand go-to-market work across enterprise, mid-market and public-sector customers. The expansion can deepen partnerships with managed security providers, systems integrators, and cloud providers, and collaborate with Singapore's cybersecurity initiatives. Horizon3 will support the digital transformation agenda in line with Singapore's National AI Strategy.
Horizon3, an AI-native security company, is expanding in Singapore with new investments from EDBI and its parent SG Growth Capital. The amount was not disclosed. The company is setting up its ASEAN headquarters and a Regional Centre of Excellence there, which will also support its growth in Australia and Japan. It will hire locally across sales, customer and partner teams. The move follows Horizon3's $250 million Series E round in August 2026, which valued it at more than $2 billion. Demand is rising as AI-driven attacks grow. Singapore's Cyber Security Agency reported that infected infrastructure in the country rose 142% in 2025 to 284,300 systems.
Horizon3 expands in Singapore to accelerate AI-Native Proactive Security across Southeast Asia. 19 Oct 2026 Horizon3, the AI-native proactive security leader, today announced a strategic expansion in Singapore, supported by new investments from EDBI and its parent SG Growth Capital, the strategic investment platform established by the Singapore Economic Development Board and Enterprise Singapore to support companies from early to growth stages. This expansion is to meet accelerating demand across Southeast Asia for continuous, evidence-based security validation as AI-driven cyberattacks escalate in speed, scale and sophistication. Horizon3 is establishing its ASEAN headquarters and a Regional Centre of Excellence in Singapore, to support its expansion across Australia and Japan as well. The company will also increase its local headcount as it scales its sales, customer and partner operations. The Singapore expansion follows Horizon3's US$250 million Series E funding round announced in August 2026, which valued the company at more than US$2 billion. The expansion aligns with Singapore's national cybersecurity priorities and the broader regional shift from periodic assessments to continuous proof of cyber resilience. Singapore's Cyber Security Agency (CSA) said in its 2025/2026 Singapore Cyber Landscape report that AI is increasingly being used by threat actors to conduct attacks with greater speed, scale and sophistication, while infected infrastructure in Singapore rose 142% in 2025 to 284,300 systems. From periodic testing to continuous security validation As AI and digital environments become more complex, organisations need to know which vulnerabilities can actually be exploited and what an attacker can reach. Horizon3's NodeZero autonomously validates attack paths, provides remediation guidance and retests to verify fixes, giving security teams continuous, evidence-based visibility into real-world exposure. "Singapore's regulatory and national cybersecurity agenda signals a broader shift across the region: boards can no longer rely on confidence or compliance checklists; they must be able to prove cyber resilience and prove they are prepared for AI-enabled cyber warfare," said Snehal Antani, CEO and co-founder of Horizon3. "Our expansion in Singapore, supported by EDBI and SG Growth Capital, positions Horizon3 at the centre of Southeast Asia's digital economy, where we can work closely with customers and partners to move from periodic assessments to continuous, attacker-validated proof of resilience. As AI compresses attack timelines from months to hours, the strategic question for security leaders is not how many vulnerabilities they have, but whether they can continuously validate what is actually exploitable and verify that remediation has reduced business risk." "Horizon3 chose Singapore as our Southeast Asia base because it combines a deep concentration of financial institutions, critical infrastructure operators and regional headquarters with a clear, forward-looking direction on cyber resilience and AI governance," said Gareth Cox, vice president, Asia Pacific and Japan at Horizon3. "From CSA's Cyber Landscape 2025/2026 report and Cyber Trust Mark roadmap to MAS' tightened technology-risk notices, Singapore is setting expectations that security must be measurable, not just documented. This makes it the ideal launchpad for supporting organisations across Malaysia, Indonesia, Thailand and beyond as they shift from tick-box compliance to outcomes-based security. We are working with boards and CISOs to demonstrate, with evidence, that their security investments are closing the attack paths that pose the greatest risk to the business." Strategic Investments from EDBI And SG Growth Capital The investments by EDBI and SG Growth Capital reflect confidence in Horizon3's technology and its fit with Singapore and the region's cybersecurity priorities. "Horizon3 combines differentiated AI technology with a strong track record of helping enterprises adopt continuous security validation and proactively strengthen their security posture," said Yeung Chia Li, senior partner, EDBI. "The establishment of its ASEAN headquarters and Regional Centre of Excellence in Singapore reflects the company's long-term commitment to the region and will contribute to the growth of Singapore's cybersecurity ecosystem. Beyond our investment, we look forward to supporting Horizon3's expansion through access to talent, strategic partnerships and market opportunities across Southeast Asia." Horizon3 will use its Singapore expansion to: * Scale its go-to-market operations across Southeast Asia, including enterprise, mid-market and public-sector segments. * Deepen partnerships with local Managed Security Service Providers (MSSPs), systems integrators and cloud providers to deliver continuous validation at scale. * Collaborate with Singapore's cybersecurity ecosystem, including CSA-led initiatives on AI for cybersecurity and CII resilience. * Help secure the digital transformation in continuous assurances with relations to Singapore's National AI Strategy from the Ministry of Digital Development and Information. About Horizon3 Horizon3, the AI-Native Proactive Security Company behind NodeZero(R), shifts the advantage from attackers to defenders by giving organisations the power to fight AI with AI. NodeZero, the World's Best AI Hacker(TM), autonomously tests defences at machine speed, safely uncovers and prioritises exploitable attack paths, instantly verifies fixes, and drives a continuous hack-fix-verify loop. More than 7,000 organisations, including global defence agencies, Fortune 10 enterprises, multinational banks and major healthcare providers, trust Horizon3 for security they can prove. Horizon3 was recently named the Fastest Growing Cybersecurity Company in North America by the Deloitte Technology Fast 500 and one of the Most Innovative Companies by Fast Company in 2026.
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Industries
Company Size
501-1,000
Company Stage
Series E
Total Funding
$437M
Headquarters
San Francisco, CA
Founded
2019
Find jobs on Simplify and start your career today
Don't see your dream role? Check out thousands of other roles on Simplify.Browse all jobs