Upwind Security Raises $400M Series C as Revenue Quadruples with Runtime-First AI Security Approach

Upwind Security Secures $400M Series C at $3.8B Valuation

Upwind Security announced a $400 million Series C funding round led by Bessemer Venture Partners, valuing the cloud and AI security platform at $3.8 billion1

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. The round, which reportedly started at $300 million before closing with an additional $100 million, marks a substantial increase from the company's $1.5 billion valuation during its Series B round in January 20261

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. Canapi Ventures joined as a new investor alongside existing backers including Cyberstarts, Greylock Partners, Craft Ventures, Leaders Fund, Salesforce Ventures, TCV, Alta Park Capital, Penny Jar Capital, Cerca Partners, Swish Ventures and Picture Capital1

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. Investors have now committed approximately $830 million to the company since its founding in 20222

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Revenue Quadruples as Runtime Intelligence Gains Traction

Upwind Security disclosed that its revenue quadrupled in 2026, reflecting growing enterprise demand for its runtime-first security strategy1

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. The company's cloud and AI security platform combines runtime intelligence with context from cloud workloads, APIs and AI agents to help security teams identify critical exposures and detect attacks in real time1

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. Co-founder and CEO Amiram Shachar emphasized that traditional security assessments relying on periodic snapshots struggle to keep pace with rapidly changing cloud environments. "Context is key to managing internal and external risks, security teams need to understand how cloud, and AI interact in real time," Shachar said1

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. The platform supports Amazon Web Services, Microsoft Azure, Google Cloud Platform and Oracle Cloud Infrastructure, with AWS customers able to access Upwind directly through AWS Security Hub integration1

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AI Agents Drive Autonomous Threat Investigation and Risk Remediation

Upwind Security is developing specialized AI agents designed to investigate threats autonomously, validate attack-surface findings and remediate infrastructure risks without constant human intervention1

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. The platform features three categories of AI-driven security capabilities: Blue agents that investigate log sources to build comprehensive attack stories, Red agents that verify exposure and attack surfaces, and Green agents that identify pressure points to fix thousands of security findings3

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. "Security needs to keep pace with environments that AI agents can change at a speed and scale that human teams alone cannot match," Shachar explained1

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. This approach addresses a critical gap where traditional tools generate alerts lacking context, forcing security teams to manually investigate whether an exposure is actually reachable or exploitable in production environments1

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Enterprise Customers Highlight Real-Time Visibility Benefits

Hundreds of organizations now use Upwind Security, including Siemens, Roku, Carvana, Nubank, Supabase and ClickUp1

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. Customer feedback emphasizes the practical difference between identifying potential weaknesses and understanding what is actually running in production. "Upwind gave us visibility into what is actually running, not just what a scan found. That changed which risks we spend our time on," said Michael Cannizzo, CISO of HedgeServ1

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. Ping CISO Russ Kirby noted the rapid implementation and operational value: "Setup took days. What stood out after that was visibility into live workloads rather than a snapshot, and that redirected where our team spends effort"1

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. The platform enables security, development and DevOps teams to share a unified view of their cloud and AI systems, with developers able to trace findings back to the underlying code2

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Strategic Expansion Plans and Market Position

Upwind Security plans to use the Series C funding to accelerate product development and expand its go-to-market operations1

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. The company has launched AI Labs for Cybersecurity to provide infrastructure and resources for addressing security challenges that will define future industry needs3

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. Shachar emphasized that "AI is fundamentally changing both the cloud infrastructure architecture and the scale of cyber threats and how organizations build and operate software"1

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. Reports indicate Upwind Security recently turned down a $4 billion takeover offer from Datadog, suggesting confidence in its independent growth trajectory2

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. Founded in 2022 by Amiram Shachar and former colleagues from Spot, a cloud infrastructure optimization startup acquired by NetApp for reportedly $450 million in 2020, Upwind Security is positioning itself to address the growing complexity of securing AI-powered applications and autonomous agents that can modify cloud environments faster than human teams can manually track1

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