Vanta Signs Deal to Acquire AI Security Firm Pillar Security
What happened
On November 9, 2026, Pillar Security announced that Vanta had signed a definitive agreement to acquire the company. Pillar Security specializes in AI agent testing and runtime protection, and its technology will be integrated with Vanta’s Trust Graph platform. The planned integration is designed to connect AI governance policies with real-time system controls. Both companies aim to enhance the management and enforcement of AI security throughout the lifecycle of AI systems.
Key details
- Pillar Security was founded in 2023 by Dor Sarig and Ziv Karliner.
- Vanta serves more than 20,000 companies with its trust and compliance platform.
- Pillar’s Secure AI Lifecycle (SAIL) framework has been downloaded over 50,000 times and identifies 91 AI risks across seven lifecycle phases.
- Pillar’s software provides agent discovery, testing, runtime protection, and compliance documentation.
- The integration will link policy-based restrictions, real-time monitoring, and audit evidence within Vanta’s platform.
Why it matters
Organizations using Vanta’s platform will gain new capabilities to test, monitor, and enforce AI agent behavior in real time, reducing the risk of unauthorized actions by AI systems. Compliance, security, and governance teams will be able to connect written AI policies directly to technical controls and generate audit-ready evidence. This integration provides companies with a more comprehensive framework for managing AI risks and demonstrating regulatory compliance.