Led by Elad Gil, the funding will accelerate Infisical’s expansion as enterprises adopt AI agents that need secure access to critical systems

SAN FRANCISCO, Oct. 27, 2026 /PRNewswire/ — Infisical today announced it has raised $40 million in Series B funding at a $600 million valuation. The round was led by Elad Gil, who previously invested in the company’s Series A, with Gradient and Y Combinator among its other investors.

Infisical provides cybersecurity infrastructure organizations use to secure sensitive credentials, manage access to critical systems, and keep digital certificates renewed and trusted. Cyberattacks, vulnerabilities, and breaches are proliferating, which makes cybersecurity increasingly important. Novel threats from AI agents make the situation even more difficult.

AI agents need access to source code, databases, cloud infrastructure, and other critical systems to function. This requires credentials like API keys, passwords, and authentication tokens, which AI agents cannot be trusted with.

Infisical’s Agent Vault lets companies give AI agents access without handing over credentials. Companies can define the access each agent needs and be assured it cannot leak credentials in a cyberattack or inadvertently send them to LLM providers or other tools it communicates with.

“You wouldn’t give an employee unrestricted access to every system in your company, and AI agents shouldn’t be any different,” said Vlad Matsiiako, co-founder and CEO of Infisical. “Agents need access to company systems to do their jobs, but giving them actual passwords and API keys is a major security risk. We let agents get their job done safely without ever having those credentials in their hands.”

Enterprise Adoption and Investment

Infisical serves more than 1,300 customers and 300,000 developers and secures 10 billion secrets every day. Its open-source project has earned more than 30,000 GitHub stars. Customers include Airbus, Volkswagen, Hugging Face, OpenRouter, Lucid, First American Financial Corporation, Wise, and Clay.

Infisical will use the new funding to accelerate product development, expand its engineering and go-to-market teams, and build out its security infrastructure for AI agents as enterprise adoption increases.

“AI agents are becoming a new class of users inside every enterprise, and securing their access will be one of the biggest cybersecurity challenges of the next decade,” said Elad Gil. “Vlad and co-founders Maidul and Tony recognized early that AI agents would create an entirely new set of security challenges, and they’ve built Infisical into a platform that I believe can become essential infrastructure for the AI era.”

About Infisical

Infisical is a security infrastructure platform for developers, machines, and AI agents. The company helps organizations securely manage secrets, certificates, encryption keys and privileged access across their infrastructure. Its Agent Vault enables AI agents to access sensitive systems without exposing underlying credentials. Infisical serves more than 1,300 customers and 300,000 developers worldwide. Learn more at infisical.com.

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SOURCE Infisical