Kevin Mandia’s new ‘agent swarm’ security startup Armadin raises $255.5M at $2.5B valuation

Kevin Mandia’s new startup Armadin raised $255.5 million in a Series B round, valuing the company at over $2.5 billion. The funding, led by Andreessen Horowitz and Accel, follows a $190 million Series A, bringing total capital raised to more than $445 million. Armadin offers enterprises an always-on security model that deploys agentic swarms to chain vulnerabilities and detect weaknesses before attackers can exploit them.