Horizon3 Raises $250M Series E at $2B+ Valuation to Lead the "AI vs. AI" Cybersecurity EraHorizon3, the AI-Native Proactive Security Company behind NodeZero®, the World’s Best AI Hacker™, today announced a $250 million Series E at a valuation of more than $2 billion, tripling its valuation from $650 million at Series D in just over a year. The oversubscribed round was co-led by existing investors NightDragon and NEA, with participation from seven new investors and five returning backers. This round gives us the fuel to scale aggressively as the definitive leader of the AI vs. AI era.” "Horizon3 coined the concept of cyber warfare being AI vs. AI, and that future has arrived," said Dave DeWalt. I am thrilled to join the board to help Horizon3 secure the world's most critical infrastructure and enterprises at scale."