Horizon3 Secures $250 Million to Lead AI-Versus-AI Cyber Defense
Summary
Horizon3 raised $250 million in a Series E round to expand NodeZero, its platform for defending against AI-driven cyberattacks. The funding more than tripled the company's valuation to above $2 billion from $650 million about a year earlier.
Horizon3's valuation surge shows investors are treating automated cyber defense as a core requirement of
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AI is accelerating cybersecurity spending while raising the strategic value of platforms that automate both offense detection and response.