Armadin Raises $255.5M at $2.5B Valuation

Armadin, a startup using AI to defend computer systems, raised $255.5 million on Oct. 1, 2026. The Series B, a second major private funding round, was led by Andreessen Horowitz and Accel and values the company above $2.5 billion. It follows a $190 million Series A in March, bringing total funding above $445 million.