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Armadin

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AI-native cybersecurity platform for eliminating exploitable risk

Redwood City, United StatesFounded 2025Cybersecurity
Valuation $500M–1B Last recorded · 2026
Headcount 100–500 Current team size
Total funding $100–500M Disclosed equity funding
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About Armadin

Armadin is an AI-native cybersecurity company that has developed a platform to help organizations prepare for the speed and scale of AI-driven cyber threats. The company was founded in September 2025 by CEO Kevin Mandia, Travis Lanham, Evan Peña, and David Slater. The founding team combines expertise from elite red teaming specialists with AI researchers and engineers.

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Kevin Mandia is a well-known figure in the cybersecurity industry, having founded Mandiant in 2004. Mandiant became a prominent incident response and threat intelligence firm, famous for its report on cyber attacks by a unit of China's People's Liberation Army. After being acquired by FireEye in 2014 and later spun out, Mandiant was sold to Google for $5.4 billion in 2022. Mandia's co-founder, Travis Lanham, is a former Google Cloud security leader who managed technical strategy for large-scale security systems at Google following the Mandiant acquisition. This background provides Armadin with deep operational experience in how attackers operate and how to build defenses against sophisticated threats.

The company's mission is to address the challenge of "Hyperattacks"—sophisticated, multi-modal campaigns that move at machine speed and overwhelm traditional, human-led security defenses. Armadin's platform utilizes a swarm of specialized AI agents that act like an attacker, continuously reasoning, planning, and adapting to find and validate exploitable vulnerabilities and kill chains across a client's entire attack surface. Unlike traditional vulnerability scanners, these AI agents provide proof of what can be exploited, allowing organizations to proactively fix critical risks. This approach aims to reduce the time it takes to perform security tests from days to minutes.

Armadin operates on a subscription-based model, serving large enterprise clients, including Fortune 100 companies. The company has seen rapid growth, hiring over 60 employees shortly after its founding. Armadin made headlines by securing a combined $189.9 million in Seed and Series A funding, reported as the largest early-stage funding round in cybersecurity history. The funding was led by Accel, with significant participation from Google Ventures, Kleiner Perkins, Menlo Ventures, In-Q-Tel, 8VC, and Ballistic Ventures.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2025
Headquarters
Redwood City, United States
Open positions
None listed
Dealroom signal
58.4/100
Industry
Security
Sub-industry
Cloud & Infrastructure
Sector
Cloud Security, Network Security, Security Technology, Intrusion Detection, Cyber threat Intelligence and detection, Core AI, Cybersecurity, AI Security, Rumoured $1B, Generative AI, genAI Applications
Business model
SaaS

Funding history

2 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES AOther financing Mar 2026 $190M $760M Kleiner Perkins · GV · Menlo Ventures · 8VC ↗
SEEDOther financing Dec 2025 $24M $96M Ballistic ventures · 8VC ↗
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Growth signals

Armadin website traffic

Latest recorded traffic for Armadin is 13K monthly website visits, down 35% over the last three months.

Latest monthly visits13K 3-month web change-35%
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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

7 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed2 investors entered at this stage

  • Ballistic ventures
  • 8VC

Series A5 investors entered at this stage

Team profiled 5 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 5 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
🇺🇸 United States · Redwood City HQ
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Market sentiment

Posts on X, past 7 days

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Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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