# Upwind Security raises $400M at $3.8B valuation led by Bessemer

Digest AI · Business & Funding · published 2026-10-28T11:25:01Z

Canonical: https://digestai.news/story/upwind-security-raises-400m-at-3-8b-valuation-led-by-bessemer

## Summary

AI and cloud cybersecurity startup Upwind Security raised $400M led by Bessemer at a $3.8B valuation, up from $1.5B in January, for $830M in total funding
Marissa Newman / Bloomberg : AI and cloud cybersecurity startup Upwind Security raised $400M led by Bessemer at a $3.8B valuation, up from $1.5B in January, for $830M in total funding   —  Upwind Security, a San Francisco-based startup offering cybersecurity for artificial intelligence and cloud applications …
Marissa Newman / Bloomberg : AI and cloud cybersecurity startup Upwind Security raised $400M led by Bessemer at a $3.8B valuation, up from $1.5B in January, for $830M in total funding   —  Upwind Security, a San Francisco-based startup offering cybersecurity for artificial intelligence and cloud applications …

## Key points

- Upwind Security raised $400M led by Bessemer at a $3.8B valuation
- Valuation up from $1.5B in January, total funding reaches $830M
- Startup provides cybersecurity for AI and cloud applications

## Why it matters

Large funding round signals strong investor confidence in AI-focused cybersecurity as cloud and AI adoption accelerates.

## Sources

1. [AI and cloud cybersecurity startup Upwind Security raised $400M led by Bessemer at a $3.8B valuation, up from $1.5B in January, for $830M in total funding](https://bloomberg.com/news/articles/2026-10-28/ai-cybersecurity-startup-upwind-raises-at-3-8-billion-value) (bloomberg.com, 2026-10-28)

## Cite

Digest AI, "Upwind Security raises $400M at $3.8B valuation led by Bessemer", 28 October 2026, https://digestai.news/story/upwind-security-raises-400m-at-3-8b-valuation-led-by-bessemer

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