Startup That Stops Hackers Raises $255.5 Million

Armadin, a company that uses software to stop hackers, raised $255.5 million on Oct. 1, 2026. The second fundraising, called Series B, was led by Andreessen Horowitz and Accel and values Armadin above $2.5 billion. It follows a $190 million first fundraising, called Series A, in March, bringing total funding above $445 million.