Founder · Armadin

Kevin Mandia

The Mandiant founder is back, with AI agents that attack like adversaries.

The story in brief

Mandia founded incident-response firm Mandiant, later acquired by Google. His new company, Armadin, emerged from stealth in 2026.

Armadin raised a $255.5 million Series B at a valuation above $2.5 billion seven months after launch.

Repeat founders raise fast

Domain depth compounds

Nvidia

Planned Nvidia in a Denny's booth and survived years of near-bankruptcy.

Canva

Rejected by 100+ investors, she learned to kitesurf to get into the room.

Airbnb

Rented air mattresses, sold cereal boxes, and built a global travel giant.

Spanx

Turned $5,000 of savings into a billion-dollar brand — without VC.