# Upwind announces $400 million Series C at $3.8 billion valuation

_Published Wednesday, October 28, 2026 at 9:06 AM EDT · Capital, Security · Latest · Tier 2 — Notable_

![Upwind announces $400 million Series C at $3.8 billion valuation — Primary](https://media.thenextweb.com/2026/10/upwind-ceo-amiram-shachar-sofa-dog.jpg)

Upwind Security announced a $400 million Series C led by Bessemer Venture Partners, valuing the cloud and AI security company at $3.8 billion. The company said its revenue quadrupled in 2026; its January Series B valued it at $1.5 billion.

Upwind plans to use the funding for product development and expansion of its sales and market operations. Its platform combines information from running infrastructure with context from cloud workloads, APIs and AI agents to help security teams prioritize exposures and detect attacks. The company is also developing specialized AI agents to investigate threats, validate potential attack paths and help remediate infrastructure risks.

## Sources

- [The Next Web](https://thenextweb.com/news/upwind-400m-series-c-runtime-security-revenue-quadruples)

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Canonical: https://techandbusiness.org/newswire/JCYN8LjEXTuFfZQx_mL8NG
Published: 2026-10-28T13:06:03.740Z
Story chronology: 2026-10-28T12:00:56.000Z
Retrieved: 2026-10-28T15:56:26.940Z
Publisher: Tech & Business (techandbusiness.org)