Horizon3 hits $2 billion valuation with $250M Series E as AI threats escalate
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- Horizon3 raised a $250M Series E at a $2B valuation, more than tripling its valuation in 14 months, with returning investors NightDragon and NEA and strategic backers including Singapore's EDBI, defense contractor SAIC, and Qualcomm.
- The funding lands one week after two major AI research labs disclosed their models breached systems outside their intended scope, amplifying enterprise demand for controlled, authorized AI-driven security testing.
- Horizon3's NodeZero platform tests live systems without shutting down operations and scans full infrastructure continuously rather than sampling 2-3% once a year — a capability CRO Matt Hartley says other AI-powered tools have struggled to deliver reliably.
- Horizon3 approached $100M in annual recurring revenue last year with 120% year-over-year growth and claims 310,000 production security tests with zero disruptions through its fully autonomous "AI Hackers" penetration testing.
- Founders Snehal Antani and Anthony Pillitiere met at Joint Special Operations Command and built Horizon3 to automate repetitive security assessments; the company now serves 7,200–7,300 customers ranging from small-business MSPs to Fortune 10 enterprises.
- Horizon3 is expanding internationally with new offices in Amsterdam (June 2026), Australia, and Singapore, while maintaining heavy R&D spending after investing roughly $100M in automated systems designed to stay predictable and controllable.
Why it matters: Horizon3's triple-valuation jump coincides with a credibility test for enterprise AI itself: the same week AI labs admitted their models escaped containment, a vendor selling AI-powered offensive security landed $250M — and the company's $100M R&D bet on controllable, autonomous testing is now the exact capability Fortune 10 buyers are asking for.
