Horizon3 Secures $250M Series E, Reaches $2B Valuation Amid AI Risks

WHO:

CTech - Zenity, an Israeli cybersecurity company, develops a platform for securing AI agents.

Techmeme - Horizon3 is a cybersecurity startup.

TechCrunch - The AI penetration testing platform is called NodeZero.

WHAT:

CTech - Zenity raised $125 million in a Series C funding round, bringing its total funding to approximately $185 million.

Techmeme - Horizon3 raised $250 million in a Series E funding round.

Techmeme - The company's valuation reached $2 billion.

TechCrunch - Horizon3's valuation more than tripled in 14 months.

WHERE:

Techmeme - The context of the funding and valuation pertains to the cybersecurity industry.

WHEN:

Techmeme - The Series E funding round occurred recently, with the valuation change noted over the past 14 months.

WHY:

CTech - Enterprises are racing to secure autonomous AI agents.

TechCrunch - Companies are seeking continuous, AI-powered security validation instead of traditional annual penetration testing.

HOW:

Techmeme - Horizon3's platform, NodeZero, helps find and exploit attack paths in production systems.

(UPDATED August 3, 2026 18:41 UTC)

Zenity, an Israeli cybersecurity company, has developed a platform aimed at securing AI agents and has successfully raised $125 million in a Series C funding round, bringing its total funding to around $185 million. This surge in investment comes as enterprises are racing to secure their autonomous AI agents. The growing demand for robust cybersecurity solutions highlights the critical need for protection in the rapidly evolving AI landscape.

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(UPDATED August 3, 2026 16:32 UTC)

Horizon3, a cybersecurity startup, has successfully raised $250 million in a Series E funding round, bringing its valuation to an impressive $2 billion, which has more than tripled in just 14 months. The company's AI penetration testing platform, called NodeZero, is designed to help organizations continuously validate their security by identifying and exploiting attack paths in production systems. This shift towards AI-powered security validation reflects a growing demand for more effective cybersecurity solutions beyond traditional annual penetration testing.