Horizon3 Promotes Keith Poyser to EMEA General Manager Amid 260% Revenue Growth

Horizon3 announced on October 13, 2026, that Keith Poyser has been promoted to General Manager for Europe, the Middle East and Africa. Poyser previously served as Vice President for the region and will now oversee the company’s next phase of expansion across these markets, according to a press release from the vendor.

The promotion follows a period of significant financial growth for the region, which recorded more than 260 percent revenue growth in the last fiscal year. Poyser is credited with building the regional organization from a starting team of eight people to a workforce of more than 110 employees. He also established a regional leadership bench to support this scaling effort.

Executive Commentary and Strategy

Snehal Antani, CEO and co-founder of Horizon3, stated that Poyser built an organization capable of delivering substantial revenue increases while fostering accountability. Antani emphasized that the new leadership structure matters because it empowers teams with the authority needed to sustain business growth. Poyser will maintain customer outcomes as the central focus of his expanded role.

Poyser noted that AI-enabled attackers are accelerating their operations, requiring customers to routinely find and fix exploitable weaknesses. He stated that the EMEA team has built strong partner relationships to help organizations verify that attack paths are closed. His priority is to extend this reach across the region while maintaining a focus on proven risk reduction.

Company Background and Impact

Horizon3 operates NodeZero, an autonomous security testing platform that demonstrates exploitable attack paths and verifies remediation efforts. The company claims to shift the advantage from attackers to defenders by using AI to test defenses at machine speed. More than 7,000 organizations, including global defense agencies and Fortune 10 enterprises, use the platform.

The vendor was recently named the Fastest Growing Cybersecurity Company in North America by the Deloitte Technology Fast 500. Fast Company also listed Horizon3 as one of the most innovative companies in 2026. Poyser brings more than 20 years of experience from roles at SentinelOne, Palo Alto Networks and IBM.

What should you do?

Security leaders should review their current vendor relationships to ensure they align with evolving AI-driven threat landscapes. Organizations should verify that their security testing processes include routine validation of remediation efforts. Teams should assess whether their current tools can demonstrate exploitable attack paths effectively.

What to do and how to stay safe: Horizon3

• Evaluate if your current security testing tools can autonomously identify and prioritize exploitable attack paths.
• Verify that remediation efforts are routinely tested to ensure attack paths are actually closed.
• Review vendor partnerships to ensure they support continuous hack, fix, and verify loops.
• Assess whether your security teams have the authority and resources to respond to AI-enabled threats.

Step-by-step guide: Mobile Device Security: How to Protect Data Beyond Passwords

General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.

Frequently asked questions

Who is the new General Manager for Horizon3's EMEA region?

Keith Poyser has been promoted to General Manager, EMEA, effective October 13, 2026.

How much revenue growth did the EMEA region experience?

The region saw more than 260 percent revenue growth in the last fiscal year.

How many employees are now in the Horizon3 EMEA team?

The team has grown from eight to more than 110 employees under Poyser's leadership.