Upwind raises $250m series B to scale runtime-first cloud security

January 26, 2026

Upwind, a runtime-first cloud security company, has raised $250m in Series B funding as it looks to accelerate product development and global expansion amid strong enterprise adoption.

The funding round was led by Bessemer Venture Partners, with participation from Salesforce Ventures and Picture Capital. Existing backers including Greylock, Cyberstarts, Craft Ventures and TCV also participated. The raise brings the company’s total funding to $430m.

The Series B marks the start of what Upwind calls “The Next Wave”, a new phase focused on scaling its runtime-first approach to cloud security as enterprises adopt AI-driven and real-time cloud applications.

The company operates in the cloud-native application protection platform (CNAPP) market.

Upwind was built around the belief that effective cloud security must rely on runtime evidence rather than posture snapshots.

Since its $100m funding round a year ago, Upwind has recorded 900% year-over-year revenue growth and 200% logo growth. Over the same period, the company expanded its workforce from 150 to more than 300 employees and strengthened its presence across the U.S., U.K. and Israel, with additional momentum in Asia-Pacific markets.

Upwind CEO and co-founder Amiram Shachar said, “Cloud infrastructure has changed faster than the security models designed to protect i.

“The next era of cloud security requires a fundamentally different approach, centered in realtime signals. That’s actually the only way to protect the cloud in the new era of AI. We built Upwind for where the cloud is going, not where it has been. This funding round is a small milestone in our journey, but it marks a big day, and it reflects a growing recognition and validates what customers and the market see.”

Bessemer Venture Partners partner Elliott Robinson said, “Cloud security is already one of the largest and fastest growing segments in cybersecurity, and Upwind stood out to us as the right team with the right product in the right time, building for where the market is going.

“Their modern, runtime-first approach, focus on signal over noise, and battle-tested founding team have translated into a company and product that are trusted and loved by security, engineering and platform (DevOps) teams, and used as a true platform. We’re very proud to partner with Upwind as they build the runtime-first cloud security platform for the next generation of enterprises.”