Business Palo Alto splashes $400m on one-year-old security startup Koi to help Palo Alto meet a "dramatic shift" in endpoint security for AI agents. Noah Bovenizer Feb 18, 2026 - 2 min read Image credit: Koi Get the full story: Subscribe for free Join peers managing over $100 billion in annual IT spend and subscribe to unlock full access to The Stack’s analysis and events. Subscribe now Already a member? Sign in