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# Kevin Mandia's Armadin raises $255.5M at a valuation above $2.5B
- URL: https://www.enterprisey.com/kevin-mandia-s-armadin-raises-255-5m-at-a-valuation-above-2-5b/
- Published: 2026-10-01T21:45:00.000Z
- Updated: 2026-10-26T04:15:43.000Z
- Description: Armadin, the offensive security startup founded by Mandiant founder Kevin Mandia, raised a $255.5M Series B valuing it above $2.5B. Its AI agents probe customer environments to find and chain weaknesses into attack paths.
- Author: Enterprisey Admin
- Tags: News, Funding, Security

Armadin, the offensive security startup founded by Mandiant founder Kevin Mandia, raised a $255.5M Series B valuing it above $2.5B. Its AI agents probe customer environments to find and chain weaknesses into attack paths. ([PR Newswire (via Webull)](https://www.webull.com/news/15672401073423360?ref=enterprisey.com); [SecurityWeek](https://securityweek.com/kevin-mandias-armadin-raises-255-million-at-2-5-billion-valuation?ref=enterprisey.com); [SiliconANGLE](https://siliconangle.com/?p=849067&ref=enterprisey.com))

Andreessen Horowitz and Accel co-led the round, with new investors Bain Capital Ventures and Redpoint joining returning backers including GV, Kleiner Perkins, Menlo Ventures and In-Q-Tel. Armadin has now raised $445M in total and plans to spend on research, AI training and go-to-market. ([PR Newswire (via Webull)](https://www.webull.com/news/15672401073423360?ref=enterprisey.com); [SecurityWeek](https://securityweek.com/kevin-mandias-armadin-raises-255-million-at-2-5-billion-valuation?ref=enterprisey.com); [SiliconANGLE](https://siliconangle.com/?p=849067&ref=enterprisey.com))