Upwind raises $400m at $3.8b valuation
The cloud and AI security startup plans to expand engineering and sales as annual recurring revenue nears $100 million, the company said.
- On Wednesday, October 28, 2026, San Francisco-based cybersecurity startup Upwind Security announced a $400 million Series C funding round, pushing its valuation to $3.8 billion.
- Upwind, led by CEO Amiram Shachar, secured this funding after rejecting a $4 billion acquisition offer from DataDog, as investors remain confident the company's momentum will drive its value higher.
- The platform reshapes cybersecurity by "operating from the inside out," integrating context from cloud workloads and AI agents, with clients including Nubank, Carvana, and Roku.
- Management plans to channel fresh capital into engineering and selling operations while the company's annual recurring revenue has quadrupled this year to an estimated $80 million or more.
- Shachar noted that "in the last three months, there was more activity than in the last four years combined," as surging AI-driven threats fuel demand for proactive, runtime-first security solutions.
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Upwind's $400M Series C backs a runtime-first security strategy as revenue quadruples
The moment a cloud workload changes, the security picture around it can change too. A new application release, an altered configuration or an interaction between services may affect whether an exposure can be exploited. For security teams relying on periodic assessments, keeping pace with those changes can be difficult. Upwind Security has built its cloud […] This story continues at The Next Web
Upwind Security Raises $400 Million at $3.8 Billion Valuation
Upwind Security today announced a $400 million Series C funding round at a $3.8 billion valuation. Coming just nine months after the company announced a $250 funding round at $1.5 billion valuation, the investment brings the total amount raised by the company to over $800 million. Upwind offers a runtime-native cloud security platform that provides organizations with increased visibility into
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