Observed Signal · Aug 3, 2026 · Funding · Source: techcrunch · Impact: 3/5 · Sentiment: Positive
Horizon3 Raises $250M Series E at $2B Valuation
Horizon3, a San Francisco-based cybersecurity startup, raised $250 million in a Series E at a $2 billion valuation. Returning investors NightDragon and NEA participated, and new strategic backers include Singapore’s EDBI, defense contractor SAIC, and Qualcomm. Horizon3 says it is approaching $100 million in annual recurring revenue with 120% year-over-year growth, has run 310,000 production security tests with no disruptions, and has invested roughly $100 million in R&D to build automated, controllable security testing. Its NodeZero platform performs continuous, live scans across full infrastructures without shutting down operations. The funding will support international expansion (Amsterdam, Australia, Singapore), partner network development, and continued R&D amid rising AI-driven attack concerns and recent AI model breaches at research labs.
Large late-stage funding ($250M Series E) and $2B valuation indicate significant market momentum for automated cybersecurity; relevant to enterprises adopting AI and to sectors facing increased AI-driven threats, but not directly industry-shifting for AdTech.
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Key Takeaways & Evidence Grounding
- Horizon3 raised $250 million in a Series E round at a $2 billion valuation.
- Returning investors include NightDragon and NEA; new strategic investors include EDBI, SAIC, and Qualcomm.
- Horizon3 approached $100 million in annual recurring revenue last year with 120% year-over-year growth.
- The company reports it has run 310,000 production security tests with zero disruptions.
- Horizon3 is expanding internationally (Amsterdam, Australia, Singapore) and plans continued R&D investment.
Connected Companies & Entities
4 Entities mapped“The San Francisco-based firm drew backing from returning investors NightDragon and NEA....”
“The San Francisco-based firm drew backing from returning investors NightDragon and NEA....”
“Strategic investors now include Singapore’s EDBI, defense contractor SAIC, and Qualcomm, signaling that the vulnerability they’re addressing...”
“The company claims an addressable market of tens of billions of dollars, a figure that aligns with industry estimates of the broader cyberse...”
Ontology Mapping & Concepts
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