San Francisco-based cybersecurity startup Infisical has raised $40 million in a Series B funding round led by investor Elad Gil, valuing the company at $600 million.
The round also saw participation from Gradient Ventures, Y Combinator, Gallery Ventures, Pace Capital and Dynamic Capital. Elad Gil previously led the company’s Series A funding round in 2025.
Infisical was co-founded by Vlad Matsiiako, Tony Dang and Maidul Islam. The company develops open-source security infrastructure that enables organisations to manage sensitive credentials, digital certificates, encryption keys and privileged access across their technology systems.
Its platform helps developers and enterprises securely manage application secrets, automate credential rotation and control access to critical infrastructure. The company also provides security tools designed for machine identities and AI agents.
A key focus of Infisical’s expansion is Agent Vault, a product designed to allow AI agents to interact with company systems without exposing underlying credentials such as passwords and API keys. Organisations can define which systems agents are permitted to access while reducing the risk of credential exposure.
Infisical plans to use the new capital to accelerate product development, expand its engineering and go-to-market teams, and strengthen its security infrastructure for AI agents.
According to the company, Infisical serves more than 1,300 customers and 300,000 developers worldwide, securing approximately 10 billion secrets daily. Its open-source project has also surpassed 30,000 GitHub stars.
Its reported customer base includes Airbus, Volkswagen, Hugging Face, OpenRouter, Wise and First American Financial Corporation.
Before this round, Infisical raised $16 million in Series A funding in June 2025, led by Elad Gil, following a $2.8 million seed round announced in July 2023.
