Pillar Security is a Tel Aviv-based company, founded in October 2023 by Dor Sarig and Ziv Karliner, that aims to become the foundational security layer for AI-native software. As organizations move from experimenting with AI to running production LLM applications and autonomous agents, they inherit a new and poorly understood attack surface — prompt injection, data leakage, unsafe agent actions, and ungoverned model usage. Pillar offers a unified platform to discover, govern, and protect these AI deployments across the enterprise.
The platform organizes its capabilities into four areas. AI discovery and posture management maps AI assets across systems — including shadow AI installations — and assesses vulnerabilities. Risk detection and red teaming runs adversarial testing against AI systems to find exploitable weaknesses in agent orchestration and workflows before attackers do. Runtime protection deploys adaptive guardrails to enforce data privacy, detect malicious behavior, and monitor agent interactions in real time. Governance and compliance operationalizes AI security policies and generates audit-ready reports against industry frameworks.
Pillar is designed to fit into the full AI software lifecycle, integrating with development pipelines, cloud infrastructure, SaaS applications, and endpoint systems. It supports policy enforcement across approved models, data-sovereignty standards, and third-party AI providers — reflecting the reality that enterprise AI now spans many internal and external models that each carry distinct risk.
The company has earned external validation, including recognition from Gartner as a representative vendor in its 2026 Market Guide for Guardian Agents, and reports deployment among large enterprises managing multiple AI initiatives. That guardian-agent framing — software that supervises and constrains other AI agents — captures Pillar's bet that securing agents will be a defining category as agentic AI proliferates.
Pillar raised $9 million in seed funding led by Shield Capital, with participation from Golden Ventures, Ground Up Ventures, and strategic angel investors. With its end-to-end coverage from discovery and red teaming through runtime protection and governance, Pillar positions itself as the security platform enterprises adopt to deploy AI applications and agents confidently rather than fearfully.