Horizon3 Secures $250 Million to Lead AI-Versus-AI Cyber Defense

Horizon3 raised $250 million in a Series E funding round to continue growing its NodeZero platform that uses artificial intelligence to defend against AI-driven cyberattacks. The round tripled Horizon3’s valuation to over $2 billion, up from the $650 million valuation it achieved about a year ago in its Series D, the company said in a Monday (Aug. Horizon3’s NodeZero platform autonomously and safely attacks an organization’s own production environment to reveal vulnerabilities