US Firm Vanta Acquires Israeli AI Security Startup Pillar Security for $150 Million
Translated & summarized from Calcalist by baba
US-based Vanta is acquiring Israeli AI security firm Pillar Security for about $150 million in a cash and stock deal. Pillar Security will become Vanta's R&D center in Israel, with its technology integrated into Vanta's Agentic Trust platform. The acquisition aims to enhance AI security management for Vanta's over 20,000 clients. Pillar Security, founded in 2023, had raised $9 million and serves major corporations.
The story in 5 lines · by baba
- Vanta acquires Israeli AI security firm Pillar Security for approximately $150 million.
- Pillar Security will become Vanta's R&D center in Israel post-acquisition.
- The deal integrates Pillar's AI security technology into Vanta's Agentic Trust platform.
- Pillar Security, founded in 2023, had raised $9 million and serves Fortune 500 clients.
- Vanta reported over $300 million in annual recurring revenue as of April 2026.
American company Vanta has agreed to acquire Israeli artificial intelligence security firm Pillar Security for approximately $150 million in a cash and stock deal. The acquisition is set to bolster Vanta's platform for managing security, risk, and policy, integrating Pillar's technology into Vanta's Agentic Trust platform, which serves over 20,000 clients. Pillar Security, founded in 2023 by Ziv Karliner and Dor Sarig, will become Vanta's research and development center in Israel. The company's 20 employees will continue working at the new R&D hub, with the founders leading AI security development at Vanta. Pillar Security had previously raised $9 million from investors including Shield and Ground Up. The startup developed a platform enabling organizations to map their AI systems and agents, test their resilience against attacks, and protect them during operation. Its clients include Fortune 500 companies and major tech and finance firms. This acquisition aligns with Vanta's expansion into AI management and control, following the July 2026 launch of its AI product, which saw unprecedented demand. Vanta CEO and co-founder Christina Cacioppo stated that Pillar allows companies to test their AI agents and halt them if they exceed defined boundaries, providing documented proof of compliance. Pillar Security has also been active in researching threats to AI systems, having identified vulnerabilities in AI development tools like Cursor, Codex, and Gemini CLI, which allowed agents to perform actions outside their designated environments. Ziv Karliner, CEO and co-founder of Pillar Security, expressed that joining Vanta will allow them to bring their protection and testing capabilities to existing Vanta users. This marks Vanta's third acquisition, following Riskey in July 2025 and Trustpage in January 2023. Vanta reported over 300 million dollars in annual recurring revenue (ARR) as of April 2026, a 63% increase year-over-year.