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Cybersecurity firm Horizon3 crosses $2 billion valuation in new funding round

By Thomson Reuters Aug 3, 2026 | 9:38 AM

Aug 3 (Reuters) – Cybersecurity company Horizon3 said on Monday it has raised $250 million in its latest funding round, more than tripling its ​valuation to over $2 billion in just about ‌a year.

The round comes amid growing demand for cybersecurity tools as hackers increasingly tap AI technology to exploit software vulnerabilities and launch more sophisticated attacks.

• Investment firms NightDragon and ‌NEA ​co-led the round, with new ⁠investors including Acrew Capital, ⁠Blue Cloud Ventures and Demeter Group.

• Returning investors included Craft Ventures, Prosperity7 Ventures, Qualcomm Ventures, Ridge Ventures and SignalFire. Horizon3 had been valued at $650 ​million in its Series D round in June last year.

• Horizon3’s NodeZero platform autonomously tests production ⁠environments for exploitable attack ⁠paths, provides remediation guidance and verifies fixes, ​the company said.

• Horizon3 will use the proceeds from ​the latest fundraise to expand sales, marketing and ‌channel operations, enter Singapore and Australia, deepen its presence in Europe, the Middle East and Africa, and accelerate product development.

• The company said it ⁠plans to build a continuous learning loop between AI systems that simulate attacks and AI tools that defend against ⁠them, including ‌automated defensive agents that can fix ⁠issues identified by NodeZero penetration tests, which ​simulate ‌real-world hacking attempts.

• Horizon3 has gathered ​data from ⁠310,000 tests safely conducted on live systems, CEO and co-founder Snehal Antani said.

• NightDragon’s founder and CEO Dave DeWalt and Managing Director Morgan Kyauk will join Horizon3’s board.

(Reporting by Prathik Jayaprakash in Bengaluru; Editing ​by Jonathan Ananda)