Israeli cloud security startup Upwind is in advanced stages of raising $300 million in a new funding round that would value the company at $3.8 billion, according to Globes reporting. The raise would mark a significant step up for a firm that has carved out a position in the competitive runtime cloud security market, where the ability to detect and respond to threats inside live cloud environments is becoming an increasingly prized capability for enterprise and government customers alike.

The development arrives amid a broader wave of capital flowing into Israeli cybersecurity, a sector that has continued to attract major institutional interest despite global market volatility. For context on how Israeli security startups have been scaling, the trajectory of Israeli cybersecurity growth in recent years illustrates just how competitive the funding environment has become for firms at this stage.

What Upwind Does and Why Investors Are Paying Attention

Upwind focuses on runtime security for cloud infrastructure, a discipline that monitors workloads, containers, and cloud-native applications as they execute in production rather than relying solely on pre-deployment scanning. The approach addresses a recognized gap in conventional cloud security posture management tools, which can flag misconfigurations but often cannot detect threats that emerge only during live operation.

The company has positioned its platform as a unified solution that correlates runtime context with static analysis, giving security teams a more complete picture of risk across cloud environments. That combination has drawn attention at a moment when organizations operating sensitive infrastructure — including defense contractors and government agencies that increasingly depend on cloud-based systems — are under sustained pressure to demonstrate real-time threat visibility rather than compliance-on-paper.

Valuation Trajectory and the Broader Israeli Security Funding Landscape

A successful close at $3.8 billion would place Upwind among a select group of Israeli cybersecurity firms that have achieved unicorn-plus status in a compressed timeframe. The Globes report did not name the specific investors participating in the new round or confirm a final close date, and officials have not provided additional details on the capital’s intended use beyond general growth purposes.

The raise fits a broader pattern in which cloud-native security companies are commanding elevated multiples as enterprises and government clients accelerate migration to distributed cloud architectures. A parallel benchmark worth noting: another Israeli AI-linked firm, discussed in recent valuation reporting, locked in $550 million at a $5.5 billion valuation, underscoring that Israeli deep-tech firms are increasingly competitive with U.S. counterparts for top-tier institutional capital.

For the defense and national security community, the significance of Upwind’s growth extends beyond the balance sheet. Cloud infrastructure underpins logistics platforms, intelligence-sharing networks, and command-and-control systems across allied militaries, making runtime security vendors an increasingly relevant part of the broader defense-industrial supply chain. Whether Upwind pursues U.S. government certifications or defense-adjacent contract work as it deploys the new capital remains to be seen — the company has not made public statements on that front — but the valuation signals that investors believe the market for what it offers is still expanding rapidly.