Obsidian Security Raises $85M Series D
Obsidian Security, based in Palo Alto, California, is a cybersecurity platform focused on securing non-human identities and AI agents across third-party enterprise applications. The company recently announced it has raised $85 million in a Series D funding round, reaching unicorn status with a valuation of $1.1 billion.
The funding round was led by Crescent Cove Advisors. Existing investors, including Greylock Partners and Menlo Ventures, also participated in the round.
Obsidian Security plans to use the new capital to accelerate research and development of its security platform, with a focus on protecting enterprises against vulnerabilities related to next-generation AI models. The company aims to expand its reach among Fortune 500 and Global 2000 organizations, establishing its platform as the standard for governing AI agent access and activity within third-party software environments.
Founded in Palo Alto, Obsidian Security provides a security platform designed for the AI-first enterprise. The company specializes in governing data, AI, and agents operating within third-party applications, providing security teams with visibility, access controls, and runtime protection to prevent unauthorized agent actions and data breaches.
Funding Details
Company Website: https://obsidiansecurity.com
Company: Obsidian Security
Raised: $85M
Round: Series D
Funding Date: August 4, 2026
Lead Investor: Crescent Cove Advisors
Additional Investors: Greylock Partners, Menlo Ventures
Company Website: https://www.obsidiansecurity.com
Software Category: Cybersecurity