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Obsidian Security Raises Funding at $1.1 Billion Valuation on AI Security Demand

The Series D round, led by Crescent Cove Advisors, values the AI security startup at $1.1 billion as nearly 70% of customers allow agents to access business data.

  • On Tuesday, Obsidian Security raised $85 million in a Series D funding round, valuing the AI security startup at $1.1bn as businesses seek to secure growing numbers of AI agents accessing sensitive enterprise data.
  • Autonomous AI agents present unique risks because they read, write, and act on corporate data with limited oversight compared to human employees, allowing compromised agents to touch enormous volumes of data across multiple applications rapidly.
  • Chief Executive Hasan Imam reported that nearly 70% of Obsidian's customers already allow AI agents to interact with business data across platforms including Microsoft Copilot Studio, Salesforce Agentforce, and Anthropic's Claude.
  • Crescent Cove Advisors led the round, with existing investors Greylock Partners and Menlo Ventures participating, as major firms increasingly view AI-era security as a standalone market category rather than a partnership opportunity.
  • Imam predicts "a significant disruption in the agentic economy" within six to twelve months as cheaper proprietary and open-source models accelerate enterprise adoption and intensify demand for security guardrails.
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Obsidian Security raises at $1.1B valuation

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securityweek.com broke the news on Tuesday, August 4, 2026.
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