Armadin Raises $189.9 Million to Develop AI-Driven Cyber Defense Platform

March 12, 2026
Armadin has secured $189.9 million in combined Seed and Series A funding led by Accel, marking the largest early-stage financing in cybersecurity history. The company, led by Kevin Mandia, is developing an autonomous AI attacker swarm to counter AI-powered cyber threats.

AI-native cybersecurity company Armadin has raised $189.9 million in combined Seed and Series A funding, announced in a press release. The round was led by Accel, with participation from Google Ventures, Kleiner Perkins, Menlo Ventures, In-Q-Tel, and follow-on investment from 8VC and Ballistic Ventures. The company said this is the largest early-stage funding round in cybersecurity history.

Founded and led by Kevin Mandia, Armadin is focused on addressing the rise of AI-powered 'Hyperattacks'—automated, multi-modal cyberattacks operating at machine speed. Its platform deploys a swarm of specialized AI agents that simulate advanced human threat actors, continuously identifying and testing exploitable risks across enterprise systems.

The company stated that its agentic attacker swarm operates autonomously, reasoning and adapting to provide organizations with real-time assessments of vulnerabilities. Armadin’s approach combines offensive cybersecurity expertise with AI research to help organizations prepare for large-scale, automated cyber threats.

We hope you enjoyed this article.

Consider subscribing to one of our newsletters like Cybersecurity AI Weekly, AI Funding Brief or Daily AI Brief.

Also, consider following us on social media:

Cybersecurity AI AI Funding News AI Brief AI Brief (X)

More from: Cybersecurity

03/12
Google Cloud Completes Acquisition of Wiz
03/10
SAP and Uptycs Partner on Verifiable AI Security Analysts
03/09
Commvault Integrates CloudSEK Intelligence to Strengthen Identity Threat Detection
03/09
OpenAI Acquires Promptfoo to Strengthen AI Agent Security
03/06
UpGuard Raises $75 Million Series C and Launches Risk Automations Platform

More from: Funding

03/12
Sectra to Acquire Oxipit to Strengthen Autonomous AI in Radiology
03/12
Quantiphi Acquires Candyspace to Expand AI-Driven Digital Experience Capabilities
03/12
Vitestro Raises $70 Million to Advance Autonomous Blood Collection Robot
03/12
Google Cloud Completes Acquisition of Wiz
03/12
Scout Ventures Closes $125 Million Fund to Back AI and Defense Technologies

Subscribe to AI Funding Brief

AI Token Webinar

Whitepaper

Stanford HAI’s 2025 AI Index Reveals Record Growth in AI Capabilities, Investment, and Regulation

The 2025 AI Index by Stanford HAI provides a comprehensive overview of the global state of artificial intelligence, highlighting significant advancements in AI capabilities, investment, and regulation. The report details improvements in AI performance, increased adoption in various sectors, and the growing global optimism towards AI, despite ongoing challenges in reasoning and trust. It serves as a critical resource for policymakers, researchers, and industry leaders to understand AI's rapid evolution and its implications.

Read more

You May Also Like