Pillar Security, a pioneering AI security startup that helps enterprises build and run secure AI software, announced it has secured $9 million in Seed funding, enabling the company to further develop end-to-end security controls at every stage of the AI lifecycle.
The round was led by Shield Capital, joined by Golden Ventures, Ground Up Ventures and other strategic angel investors. Funds will support expanding Pillar’s R&D and go-to-market efforts.
The need for a purpose-built AI security solution has never been more urgent, the vendor said. Pillar Security addresses this need head-on, providing an end-to-end security platform specifically designed for AI-integrated software systems.
“AI is fundamentally changing the way we build software—it doesn't just add another step to traditional processes; it introduces an entirely new lifecycle.” said Dor Sarig, CEO and co-founder at Pillar Security. “In the intelligence age, data is executable, and software has agency. Pillar’s technology, backed by real-world AI threat intelligence, is built with this understanding, delivering a new class of protection designed explicitly for AI-related security risks. We are redefining application security to match the agentic and autonomous software of the Intelligence Age. This funding accelerates our mission to set new AI security benchmarks, empowering organizations to innovate securely and confidently, while uniting AI teams and security teams around a common language and toolset.”
Pillar’s end-to-end platform addresses the complete AI lifecycle and its evolving threat landscape. Pillar seamlessly integrates with existing code repositories, data infrastructures, and AI/ML platforms that teams already rely on, delivering immediate value without disrupting established workflows, according to the company.
It automatically maps all AI-related assets across the organization—from models and datasets to prompts, notebooks, and frameworks. Pillar rigorously tests AI models and their underlying infrastructure, applications, and agentic layers on which they're built upon.
This comprehensive approach enables Pillar to deploy customized and adaptive guardrails aligned with each AI application's unique risk profile and specific business objectives, proactively preventing failures that directly impact operational continuity.
“Enterprise AI adoption can only scale with security and compliance evolving in tandem,” added Nick Chen, partner at Golden Ventures. “Pillar is a pioneer in defining and provisioning “trust infrastructure” for enterprise AI procurement, development and deployment. The company represents a critical platform for any company innovating responsibly and securely in this new, intelligence-driven software landscape.”
The company is already working with leading AI organizations from Fortune 500 companies to cutting-edge tech enterprises such as Similarweb, Eleos Health, and AvidXchange, while actively collaborating with key players throughout the AI ecosystem.
For more information about this news, visit www.pillar.security.