WhiteMatter Raises $20 Million to Expand AI Security Platform

WhiteMatter has announced a $20 million Series A funding round, taking total raised to $24 million. The round was led by Blumberg Capital, with continued backing from Crew Capital and Sprout & Oak. WhiteMatter, founded in 2024 and previously known as QuilrAI, describes its platform as a governance and security layer for every AI agent operating within an organisation’s environment, spanning endpoints, cloud, SaaS, and code.

The security startup says its solution deploys and governs every agent, model, and MCP server, monitors each action, and optimises traffic through a single gateway. A key feature is the ability to deploy a dedicated guardian agent for every agent in the environment, with automatic scaling as autonomous agents multiply, enabling continuous, policy-driven control. WhiteMatter plans to use the funding to accelerate research and development, expand its go-to-market organisation, and strengthen its executive team. The firm is headquartered in San Francisco and Austin.

The article notes that WhiteMatter aims to provide visibility into where agents are built and used, and to secure and govern agent activity across environments. No specific product credentials, CVEs, or software versions are mentioned in the content provided. The statements attributed to WhiteMatter come from the company’s announcements and press materials carried by SecurityWeek.