Startup profile · funding coverage
Armadin funding, valuation and investors
Autonomous AI agents for enterprise cyber defense (Mandiant founder's startup).
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Funding, valuation & investors
Answer-first snapshotLatest funding
Series B
$255.5M · October 1, 2026
Latest known valuation
>$2.5B
Series B · October 1, 2026
Total disclosed equity funding
$445M
Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.
Current status
private
series b · Palo Alto, California
Investors in latest funding
Lead: Andreessen Horowitz , Accel
Other: Bain Capital Ventures , Redpoint Ventures
Overview
Armadin builds autonomous offensive-security agents that simulate adversaries, chain exploitable weaknesses and show security teams validated attack paths. Founded by Mandiant founder Kevin Mandia, the company raised $255.5 million in Series B funding in October 2026 at a valuation above $2.5 billion, seven months after disclosing a combined $189.9 million seed and Series A.
Why Armadin is interesting
Armadin is a concentrated bet that continuous AI red teaming can replace periodic penetration testing as exploit development accelerates. The valuation reflects Mandia's credibility and the security market's willingness to fund agent-vs-agent defense before mature operating data is public.
Product & use cases
Autonomous swarms of specialized agents run controlled offensive campaigns across enterprise attack surfaces and report validated kill chains rather than isolated vulnerability scores.
- Autonomous triage of security alerts
- Accelerated incident response playbooks
- Scaling SOC capacity without linear headcount
Key facts
- October 2026: $255.5M Series B at valuation above $2.5B
- $445M total disclosed funding
- March 2026: $189.9M combined seed and Series A
- Founded by Mandiant founder Kevin Mandia
Funding history (newest first)
Series B
2026-10-01 $255.5M Valuation: >$2.5BInvestors in our directory
Funds linked from Armadin's profile — open a fund page for stage focus and related deal articles.
Competitive landscape
Edge: Kevin Mandia's incident-response network and an unusually large capital base help recruit elite red-team and AI talent; the platform's claimed differentiation is validated exploit paths rather than vulnerability volume.
The company must prove that autonomous attack testing is safe, repeatable and materially reduces breach risk. Production, customer and test-scale figures remain company claims.
-
CrowdStrike Falcon incumbent
Endpoint + SOC platform adding AI automation.
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SentinelOne direct
AI-driven endpoint and SOC workflows.
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Torq / other SOAR agents direct
Agentic security orchestration startups.
Notable stories
- TechCrunch headline tied Mandiant founder pedigree to the mega early raise in March 2026.
Industries
Market / IPO context
Editorial / static context — not a live quote.
Related funding articles
Venture Capital Tracker pieces that cover Armadin's financing or category context.
FAQs about Armadin
Practical answers founders, operators, and investors typically search for.
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