Horizon3

Horizon3

Horizon3 is a cybersecurity startup that offers an AI-driven platform for autonomous penetration testing of networks. Their product, NodeZero, continuously tests live networks to identify vulnerabilities without causing disruptions, making it distinct in the cybersecurity landscape. The company recently raised $250 million in a Series E funding round, tripling its valuation to over $2 billion.

Total raised
$250M
tracked to date
Latest round
Series E
Aug 3, 2026
Known investors
5
led by NightDragon
Press coverage
4
outlets tracked

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🏆 Featured in Datapile’s Q3 2026 USA Funding Report

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Funding history

  1. 1
    $250MSeries EAug 3, 2026

    Led by NightDragon

    Announcement ↗

Founder

Snehal Antani
Snehal Antani
Co-founder

Investors in Horizon3

Backers from this company's tracked funding rounds.

  • NNightDragonLead investorVC firm
  • NNEAVC firm
  • EEDBIVC firm
  • SSAICVC firm
  • QQualcommVC firm

Horizon3 in the news

Coverage of this company's funding, tracked by Datapile.

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Horizon3 — Cybersecurity startup in San Francisco, United States | Datapile