Upwind Security has more than doubled its valuation since the beginning of 2026, securing a $400 million Series C round as its revenue quadruples and enterprise demand for cloud and AI security continues to develop. The financing values the company at $3.8 billion, up from $1.5 billion in its Series B round in January.
Bessemer Venture Partners led the latest investment, with participation from Canapi Ventures and existing investors Cyberstarts, Greylock Partners, Craft Ventures, Leaders Fund, Salesforce Ventures, TCV, Alta Park Capital, Penny Jar Capital, Cerca Partners, Swish Ventures and Picture Capital.
The scale of the round puts Upwind among the security companies attracting substantial investment as enterprises adapt to changing infrastructure and AI adoption. But the company’s announcement is notable for another reason: its reported revenue growth suggests that its expansion is not being driven by financing alone.
Founded in 2022, Upwind has built a cloud and AI security platform designed to help organizations understand the relationship between vulnerabilities, running workloads and active threats. The new capital will support product development and go-to-market expansion.
A Valuation Built on a Changing Market
Enterprise security budgets are increasingly being tested by infrastructure that spans multiple cloud providers, applications and services. AI adds another dimension, with employees building applications using large language models and autonomous agents beginning to interact with organizational systems.
These developments create challenges for security teams accustomed to working with separate tools for vulnerability discovery, cloud monitoring and incident investigation. A finding may identify a weakness without showing whether it is reachable or how it relates to other activity in the environment.
Upwind’s platform combines runtime intelligence with context from cloud workloads, APIs and AI agents. The company aims to give security, development and DevOps teams a shared view of critical exposures so they can prioritize remediation and detect attacks as they happen.
“AI is fundamentally changing both the cloud infrastructure architecture and the scale of cyber threats and how organizations build and operate software,” said Amiram Shachar, CEO and Co-Founder of Upwind. “Context is key to managing internal and external risks, security teams need to understand how cloud, and AI interact in real time. We built Upwind to unify those signals and eliminate complexity, helping organizations identify their most critical exposures, fix risks proactively, and detect attacks as they happen.”
Enterprise Customers and Platform Expansion
Upwind supports Amazon Web Services, Microsoft Azure, Google Cloud Platform and Oracle Cloud Infrastructure. Its AWS Security Hub integration allows customers to access the platform through the AWS console, with simplified onboarding and unified billing through AWS.
The company lists Siemens, Roku, Carvana, Nubank, Supabase and ClickUp among the organizations that trust its platform. Customer feedback has emphasized the value of runtime visibility in deciding where security teams should concentrate their efforts.
“Upwind gave us visibility into what is actually running, not just what a scan found,” said Michael Cannizzo, CISO of HedgeServ. “That changed which risks we spend our time on.”
Russ Kirby, CISO of Ping, also highlighted the implementation experience and its impact on daily operations: “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.”
What the New Capital Must Deliver
Upwind is also developing specialized AI agents that can investigate threats autonomously, validate attack-surface findings through red-team activity and help remediate infrastructure risks. The company sees automation as a way to reduce the manual burden of triage as environments change more quickly.
“Security needs to keep pace with environments that AI agents can change at a speed and scale that human teams alone cannot match,” Shachar said. “By combining real-time intelligence at runtime with the context needed to understand and remediate risk, we’re helping organizations move beyond alert management toward proactive security.”
The investment gives Upwind additional resources to expand its product capabilities and enterprise reach. Its next challenge will be turning rapid revenue growth into sustained momentum while competing in a market where organizations must balance security coverage, operational complexity and the demands of AI adoption.
