Fundz

Armadin raises $255.5 million in Series B funding to scale its autonomous security solutions. The funding round was co-led by Andreessen Horowitz and Accel, increasing Armadin's valuation to over $2.5 billion.

PRIVATEOct 01, 2026

Amount Raised

$256 Million

Round Type

Series B

Artificial IntelligenceSecurityCyber SecurityMachine LearningNetwork Security

Investors

Menlo VenturesKleiner PerkinsIn Q TelGVBallistic Ventures8 VCRedpoint VenturesBain Capital VenturesAccelAndreessen Horowitz

Description

Armadin, an AI-native cybersecurity company, has secured $255.5 million in Series B funding. The round was co-led by Andreessen Horowitz and Accel, with participation from new and existing investors. This funding will help Armadin enhance its autonomous security offerings for Fortune 500 enterprises and government clients. The funding brings Armadin's total capital raised to $445 million in just seven months since its launch.

Company Information

Company

Armadin

About

Armadin is a cybersecurity company building an AI-native platform designed to defend organizations against next-generation AI-powered cyber threats. The company focuses on developing autonomous offensive security systems that simulate advanced threat actors to identify exploitable vulnerabilities before attackers do. Armadin’s platform uses an 'agentic attacker swarm,' a network of specialized AI agents that continuously analyze, plan, and execute simulated attacks to test enterprise security defenses at machine speed.

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Funding Insights

What this usually means
Timeline to next round
Series B companies typically work for 15-20 months before raising new capital
Growth expectations
Series B companies are expected to scale rapidly and expand market reach

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