Armadin, an AI-native cybersecurity company, has secured $189.9 million in combined Seed and Series A funding - the largest such round in cybersecurity history - to develop an autonomous attacker swarm that identifies and remediates exploitable risks at machine speed.
Quick Intel
Armadin has emerged with an industry-record $189.9 million in Seed and Series A funding to address the escalating threat of AI-driven Hyperattacks. Led by Accel and backed by prominent investors including Google Ventures, Kleiner Perkins, Menlo Ventures, In-Q-Tel, 8VC, and Ballistic Ventures, this round represents the largest combined early-stage investment in cybersecurity history.
The company is developing a unified platform that deploys an agentic swarm of AI attackers powered by custom models. These agents continuously simulate sophisticated, adaptive adversary behavior across the entire attack surface, identifying exploitable paths and providing concrete, actionable proof of risk to CEOs, boards, and security leaders.
"The AI shift is changing cybersecurity more rapidly than any transition in history," said Kevin Mandia, CEO of Armadin. "In a world of machine-speed attacks, defense must become autonomous. You cannot have a human in the loop for every defense decision and expect to win. We are building the most formidable offense to give organizations the greatest defense. It's important to national security."
Traditional security tools often rely on static scans or known vulnerabilities, but Armadin takes an offensive-first approach. Its AI agents reason dynamically, plan multi-stage campaigns, and evolve tactics—mirroring the capabilities of nation-state or advanced persistent threat actors—while operating 24/7 without fatigue.
"At Accel, we look for companies that don't just participate in the market, but redefine it," said Ping Li, Partner at Accel. "Armadin is the first company we've seen that truly weaponizes the attacker's perspective to build a more resilient defense. By combining Kevin's unrivaled operational experience with a generational AI engineering team, Armadin is delivering the autonomous, comprehensive system of record for an enterprise's security posture that boards and CISOs have been demanding for years."
"The most honest measure of security has always been the offensive lens," said Evan Peña, Founder and Chief Offensive Security Officer. "At Armadin, we are taking decades of human-led red teaming expertise and reinforcing it into AI models. These models are learning our tactics and techniques and are outpacing our human operators at every turn."
"Security expertise is a constrained resource that organizations never have enough of in the moments when it matters most," added Travis Lanham, Founder and Chief Technology Officer. "Before Armadin, you could not put a nation-state level adversary inside every network 24/7. We've built the ultimate attacker - it doesn't just follow a script, it reasons and learns as it swarms your defenses. We train our models and build agents to the standards of a world-class red team with safety at the foundation and unleash them to identify exploitable risk at machine speed. We believe that this is the only way to prepare for the coming wave of AI Hyperattacks."
The founding team unites world-class red team specialists with leading AI researchers and engineers under Mandia's leadership, drawing on his extensive relationships across Fortune 100 companies, federal law enforcement, and defense sectors. Armadin positions its technology as essential for closing the "Hyperattack gap," where AI enables adversaries to operate faster and at greater scale than human defenders can match.
About Armadin
Armadin is an AI-native cybersecurity company building the ultimate attacker. With AI-powered Hyperattacks looming on the horizon, Armadin's customers leverage our platform to proactively find and eliminate exploitable risk. Armadin's swarm of AI agents operates relentlessly across the entire attack surface, uncovering real kill chains that require immediate action. Armadin is led by CEO Kevin Mandia and Founders Travis Lanham, Evan Peña, and David Slater. Together, they lead an elite collective of red team specialists and AI researchers and engineers dedicated to protecting democracy by ensuring Western superiority in cyberspace.
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