# Cloud Security Startup Upwind Raises $400M at $3.8B Valuation as Revenue Quadruples

> **Platform:** [SPIDITS AI](https://spidits.com/) — Real-Time AI News & Market Intelligence  
> **Published:** 2026-10-28T12:00:00.000Z  
> **Category:** FUNDING  
> **Impact Score:** 180/100  
> **Primary Source:** [SiliconANGLE](https://siliconangle.com/2026/10/28/cloud-security-startup-upwind-raises-400m-at-3-8b-valuation-as-revenue-quadruples)  
> **Canonical Citation:** [https://spidits.com/timeline/cloud-security-startup-upwind-raises-400m-at-3-8b-valuation-as-revenue](https://spidits.com/timeline/cloud-security-startup-upwind-raises-400m-at-3-8b-valuation-as-revenue)

## Executive Summary
Cloud and artificial intelligence security startup Upwind Security Inc. today revealed that it has raised $400 million in new funding at a valuation of $3.8 billion. Reports in early September had the round at $300 million.

## Why It Matters (Strategic Analysis)
The rapid acceleration of enterprise AI agent deployment requires real-time runtime monitoring that transcends static alert management by autonomously diagnosing and fixing cloud security vulnerabilities.

## Referenced Coverage & Sources
- **[SiliconANGLE](https://siliconangle.com/2026/10/28/cloud-security-startup-upwind-raises-400m-at-3-8b-valuation-as-revenue-quadruples)**: Cloud security startup Upwind raises $400M at $3.8B valuation as revenue quadruples — _Cloud and artificial intelligence security startup Upwind Security Inc. today revealed that it has raised $400 million in new funding at a valuation of $3.8 billion. Reports in early September had the round at $300 million. By the time it closed, Upwind had taken in an additional $100 million..._

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*Synthesized by SPIDITS AI Market Intelligence Desk. Track live AI news, model releases, and funding: [https://spidits.com](https://spidits.com)*