Instinct and Simile Raise Big Rounds for AI-Built Security

Instinct and Simile each raised nine-figure rounds for AI-native security — tools built around AI from the start — TechCrunch reported September 23, 2026, at valuations that would have seemed high a few years ago. Investors are funding next-generation security startups as worries about AI safety and rogue agents, autonomous programs acting alone, make headlines.