Vanta, a trust management software company, signed a definitive agreement to acquire Israeli AI security startup Pillar Security for US$150 million. Pillar Security builds a platform that discovers, tests, secures, and governs AI agents. The deal adds AI runtime protection and adversarial testing to Vanta's product suite.
Integration timeline
Vanta plans to bring Pillar Security's technology into its platform in early 2027. The first features are AI inventory and runtime monitoring, set for January 2027. Red-teaming is planned for spring 2027, and runtime enforcement is planned for summer 2027.
Company growth
Vanta now serves more than 20,000 customers, up from 16,000 in Q1 2026. The company surpassed US$300 million in annual recurring revenue in April 2026. Its customers include Snowflake, GitHub, Ramp, Cursor, Golden State Warriors, and Icelandair.
What Pillar provides
Pillar Security's platform helps companies discover, test, secure, and govern AI agents. Its runtime protection can block unauthorized actions in real time. The software also runs adversarial tests tailored to a customer's business context.
Vanta expects to integrate Pillar Security's capabilities throughout 2027. The acquisition is Vanta's third, following Riskey in July 2025 and Trustpage in January 2023. It builds on the AI governance product Vanta introduced in July 2026.