DECRYPT · 2026-10-28 20:16 UTC

AI Security Startup Upwind Raises $400M at $3.8B Valuation

Upwind Security raised $400 million in Series C at $3.8 billion valuation, led by Bessemer Venture Partners less than nine months after its $250 million Series B. The cloud and AI security company reported revenue quadrupled in 2026 with hundreds of customers including Siemens, Roku, and Nubank. Upwind's platform uses runtime intelligence to monitor cloud workloads and AI agents in real-time, addressing security gaps as AI models increasingly operate autonomously in organizations.

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