AArmadin provides an AI-native cybersecurity platform that helps large enterprises prepare for AI-driven cyber threats. Its system uses a swarm of specialized AI agents that simulate attacker behavior to continuously reason, plan, and adapt, seeking exploitable vulnerabilities and kill chains across an organization’s attack surface. Unlike traditional scanners, Armadin’s agents return proof of what can be exploited, enabling proactive remediation and a reduction in testing time from days to minutes. The company differentiates itself through autonomous, attack-minded AI that operates at machine speed, combining red-teaming expertise with AI research to detect and validate risks across multi-modal, rapid campaigns (hyperattacks). The goal is to shift security from reactive checks to proactive, continuous testing that keeps pace with AI-enabled threats, serving Fortune 100 enterprises on a subscription basis.
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Industries
Company Size
51-200
Company Stage
Series B
Total Funding
$469.5M
Headquarters
Redwood City, CA
Founded
2025
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"The attackers are winning": Cyber 60 founders say AI is giving hackers the upper hand | #hacking | #cybersecurity | #infosec | #comptia | #pentest | #hacker. In cybersecurity, that's reality right now, Evan Peña, cofounder and chief offensive security officer at startup Armadin, told me onstage Wednesday at Fortune, Lightspeed, and AWS's Cyber 60 event. "I definitely think the attackers are winning right now," said Peña, listing recent headline-grabbing cyber vulnerabilities. "Look at the last few weeks: You have Citrix, BeyondTrust, PHP, Node.js, all within a three or four week window. These are unprecedented emerging threats... [Using AI] attackers can now scan the entire external attack surface of a Fortune 500 - over 10,000 externally facing systems - within hours. Humans could never scale like that... What you can do in hours would have taken us a year. The scale and speed are just unparalleled." Speed, scale, and high stakes have been the story of cybersecurity in 2026, from the much-discussed cataclysm the rise of Mythos promised to OpenAI agents' attack on Hugging Face. "We're living in a continuum," said Lior Div, cofounder and CEO of 7AI, on one panel. "...The gap between events is going to shrink and shrink and shrink." Yesterday's event, held at the New York Stock Exchange, marked the release of the 2027 Cyber 60, Fortune's annual list of cybersecurity's most innovative startups. The companies acknowledged include longtime Term Sheet mainstays like open source security juggernaut Chainguard, new names on the list like frontier AI security company Irregular, and honorable mentions like data loss prevention startup Jazz. Bringing many of these startups together, the message was clear: AI is the best tool an attacker could ever hope for. "The biggest thing is the attackers have no barriers," Nick Schneider, CEO of cybersecurity unicorn Arctic Wolf, said onstage. "An organization has to go through change control. They have to get budgets, convince their teams, convince their boards. Many organizations weren't built AI-native. They weren't built to operate at the speed of bad actors. Bad actors don't care: They'll carry out the attack en masse, and if they don't get anything, no big deal, they move on to the next one." Its digital world, in short, has changed for good - and a whole lot of work lies ahead. "We're living in a very vulnerable world," said 7AI's Div. "Everything is vulnerable, and you can hack everything. The idea that you have a perimeter that can't be penetrated just isn't true." See you tomorrow, Joey Abrams curated the deals section of today's newsletter. VENTURE CAPITAL- Upwind, a San Francisco-based provider of cloud and AI security software, raised $400 million in Series C funding. Bessemer Venture Partners led the round and was joined by Greylock Partners, Cyberstarts, Craft, Salesforce Ventures, and others. - Foundry Robotics, an Emeryville, Calif.-based builder and operator of autonomous assembly factories for defense and commercial industries, raised $100 million in Series A funding. Marlinspike Partners led the round and was joined by Khosla Ventures, Red Glass Ventures, and others. - Lumaril, a New York-based developer of AI software for optimizing industrial production, raised $66 million in Series A funding. Elad Gil led the round and was joined by Felicis, Koch Disruptive Technologies, Pax Ventures, Lux Capital, and General Catalyst. - Plato, a San Francisco-based developer of workplace simulations for AI training and evaluation, raised $16 million in Series A funding. Nava Ventures led the round and was joined by Gradient Ventures and others. - Rocker, a developer of AI assistants for enterprise workers, raised $12.9 million in funding. Greycroft led the round and was joined by Anthropic, Menlo Ventures, Matchstick, Stripe, and angel investors. - Blue Arbor Technologies, a Grass Lake, Mich.-based developer of neuromuscular interfaces for prosthetic limb control, raised $10.5 million in Series A funding. Ottobock led the round. - Sava, a New York City-based provider of AI-powered trust administration services, raised $10 million in seed funding. Gradient Ventures led the round and was joined by Y Combinator, SV Angel, and others. - Omabit, a San Francisco-based developer of AI software for scientific analysis and drug development decision-making, raised $2 million in seed funding. Bright Ventures led the round. PRIVATE EQUITY- Numeracle, a McLean, Va.-based provider of business identity verification and communications trust software, raised $28 million in growth funding led by Edison Partners. - Burns Engineering, backed by OceanSound Partners, acquired PRVN Consultants, an Iowa City, Iowa-based engineering firm serving the district energy, power generation, and combined heat and power markets. Financial terms were not disclosed. - Equiti, backed by GTCR and Heritage Group, acquired Lexi AI, a Cambridge, Mass.-based developer of AI-powered healthcare language interpretation software. Financial terms were not disclosed. - Exponent agreed to acquire Crane Building Services & Utilities, an Ipswich, U.K.-based manufacturer of engineered flow control products for utility and building systems. Financial terms were not disclosed. - Officine Maccaferri, backed by Ambienta, acquired Metallurgica Irpina, an Ariano Irpino, Italy-based manufacturer of steel wire, wire mesh, and fencing systems for infrastructure, industrial, and agricultural applications. Financial terms were not disclosed. - Orangewood Partners acquired a majority stake in Refrigerated Solutions Group, a Hudson, Wis.-based manufacturer of commercial walk-in coolers, freezers, and refrigeration systems. Financial terms were not disclosed. - Platinum Equity agreed to acquire EDP, a Chicago-based distributor of propane and light fuels serving residential, commercial, and agricultural customers. Financial terms were not disclosed. EXITS- CoStar Group agreed to acquire Vexcel, a Graz, Austria-based provider of aerial imagery and geospatial data, from Riverwood Capital, for approximately $730 million in cash. PEOPLE- Eclipse, a Palo Alto, Calif.-based venture capital firm, promoted Ryan Gibson and Michael Laser to partners. - Franchise Equity Partners, a New York City-based private equity firm, hired Chris Holzshu as an operating partner. He was previously executive vice president at Lithia & Driveway.
Armadin, an AI-native cybersecurity company, has appointed retired four-star General Paul M. Nakasone as an independent member of its board of directors. Nakasone led the National Security Agency and US Cyber Command from 2018 to 2024. He now serves as founding director of Vanderbilt University's Institute of National Security. "General Nakasone is one of the most respected leaders in cybersecurity and national security," said Kevin Mandia, Armadin's chief executive officer. He said Nakasone's views on strategy and execution will help as the company pursues growth. Armadin exited stealth in March 2026. It runs agentic attack campaigns in production for Fortune 500 enterprises and government customers.
Armadin, an AI-native cybersecurity company, has named Vasu Jakkal as chief strategy and business officer. She most recently served as corporate vice president of security at Microsoft. Jakkal will lead strategy, partnerships, marketing, communications, customer success, and corporate development, reporting to chief executive officer Kevin Mandia. She previously worked with Mandia at FireEye, where she was executive vice president and chief marketing officer. The appointment follows Armadin's Series B round, co-led by Accel and Andreessen Horowitz, and the launch of Armadin Red. The company's agentic attack campaigns now run in production for Fortune 500 enterprises and government customers. "Security has never been more important for trust," Jakkal said.
Kevin Mandia's $2.5B Armadin startup uses AI agent swarms to reinvent enterprise security. Tl;dr. * Former Mandiant CEO Kevin Mandia has launched Armadin, raising $255.5M at a $2.5B valuation to build autonomous AI agent swarms for enterprise defense. * Armadin deploys teams of offensive and defensive AI agents that continuously attack, detect, and remediate networks in real time without human bottlenecks. * Backed by top-tier Silicon Valley investors, the massive debut signals a shift from human-led SOCs to always-on, machine-scale cyber defense. The legend behind Mandiant is back. Kevin Mandia doesn't start companies for fun. He builds them when the defensive model is broken. The former U.S. Air Force officer turned founder of Mandiant defined modern incident response. After FireEye acquired Mandiant for over $1 billion in 2013, Mandia led the combined company, took it back to the Mandiant name, and then steered its $5.4 billion sale to Google in 2022. He stayed to integrate Mandiant into Google Cloud Security, then quietly stepped away. Now, just as AI-driven attacks are overwhelming enterprise security teams, Mandia is returning with what he calls his final architecture: Armadin. Announced this week, Armadin has come out of stealth with a staggering $255.5 million in funding at a $2.5 billion valuation, one of the largest cybersecurity seed-to-Series A debuts on record. What is Armadin building? Security as A swarm. Armadin isn't another AI copilot for analysts or a chatbot layered on top of a SIEM. It's a complete rethink: a swarm of autonomous AI agents that live inside the enterprise and fight as a coordinated unit. The platform fields dozens to hundreds of specialized agents working in parallel. Red agents continuously probe for weaknesses, mimicking ransomware gangs, nation-state APTs, and insider threats. Blue agents monitor telemetry, hunt for anomalies, and triage alerts. Purple agents in the middle validate exploits, kill false positives, and autonomously deploy fixes, from isolating endpoints to rewriting firewall policies and rolling back identities. Instead of annual penetration tests and alert queues that take days to clear, Armadin promises continuous, live-fire testing and defense at machine speed. Human analysts move from the front line to commanders' intent, setting rules of engagement while the swarm executes. Mandia has described it as going from castle walls to an immune system. Inside the $255.5M mega-raise. The scale of the raise reflects both Mandia's track record and the urgency around AI security. According to the company, the $255.5 million round was raised across stealth seed and Series A tranches, led by Andreessen Horowitz and Sequoia Capital with participation from Lightspeed Venture Partners, ICONIQ Growth, and strategic angels including former CISOs from Fortune 100 banks and tech giants. The $2.5 billion valuation puts Armadin instantly into decacorn-track territory, ahead of even Wiz and Abnormal at a similar stage. Sources close to the deal say the round was heavily oversubscribed, with investors betting that Mandia can repeat the Mandiant playbook of trust with CISOs and government leaders. Armadin says it already has design partners in financial services, healthcare, critical infrastructure, and federal-adjacent sectors, and will use the capital to scale its engineering team in Northern Virginia, Austin, and Silicon Valley, plus build sovereign-ready data centers for regulated customers. Why investors are betting big on autonomous defense. The timing is no accident. In 2026, enterprise SOCs are drowning. AI-generated phishing, deepfake social engineering, polymorphic malware, and automated vulnerability discovery have collapsed attacker dwell time from days to minutes. Meanwhile, there is a global shortfall of nearly 5 million cybersecurity professionals. Venture firms see agent swarms as the only way to close that gap. Static rules and single-agent assistants can't keep up with attacker swarms that probe thousands of vectors at once. Only a defensive swarm can match scale with scale. Mandia brings something few AI founders can: two decades of frontline breach credibility from the Sony hack to SolarWinds to Colonial Pipeline. For boards terrified of AI breaches, that trust is the moat. What it means for the future of cyber defense. If Armadin delivers, it could kill the security model as Androguider know it. The era of human-led alert triage, quarterly red teaming, and 100-plus tool sprawl would give way to lean, autonomous platforms where testing and response happen continuously. Rivals won't sit still. CrowdStrike, Palo Alto Networks, Google Mandiant, and a wave of AI-native startups like XBOW and Seven AI are all racing toward agentic security. Expect rapid consolidation, talent wars for AI red-team researchers, and fierce debate over guardrails: who is liable when an autonomous agent quarantines a hospital network or blocks a trading desk? Mandia acknowledges the stakes. Armadin is launching with a containment-first architecture, human override controls, full audit trails, and FedRAMP and SOC 2 Type II compliance in progress. But his message to CISOs is blunt: attackers already have swarms. Defenders now need their own. AndroGuider Team Articles written by the AndroGuider team. Androguider try to make them thorough and informational while being easy to read.
From cybersecurity expert to unicorn founder: what kevin Mandia's $2.5B Armadin raise teaches African entrepreneurs. The Armadin story: how a cybersecurity legend built a $2.5B company. Kevin Mandia, the founder of Mandiant (acquired by Google for $5.4 billion), just proved that legendary entrepreneurs can do it again. His new startup, Armadin, has raised $255.5 million in funding at a $2.5 billion valuation - making it a unicorn before most companies reach their first anniversary. But this isn't just another Silicon Valley success story. Armadin's breakthrough approach to cybersecurity using "agent swarms" - autonomous AI systems that test and protect enterprise networks - reveals critical lessons for African founders building the next generation of tech companies. What makes Armadin's funding round significant. Armadin's $255.5M Series A represents more than just a big check. It signals investor confidence in founder credibility, innovative technology, and massive market demand. Here's what stands out: * Founder pedigree matters: Mandia's track record as a serial founder made this raise possible. Investors bet on people, not just ideas. * Solving real problems: Enterprise cybersecurity is a $200+ billion market. Armadin addresses genuine pain points with AI-powered solutions. * Timing and technology: The rise of AI agents caught investor attention at exactly the right moment. Why this matters for founders. If you're building in Africa, you might think billion-dollar valuations are out of reach. They're not - if you understand what attracts institutional capital: 1. Build on proven expertise: Mandia didn't start from zero. He leveraged 20+ years of cybersecurity credibility. What's your domain expertise? How can you position yourself as the go-to founder in your space? 2. Target massive markets: Armadin isn't solving a niche problem. Enterprise security affects every company globally. African founders should think big - your market isn't just Nigeria or Kenya; it's the continent and beyond. 3. Demonstrate traction before the big raise: While details are limited, investors typically don't write $255M checks without proof of concept. Start small, show results, then scale. 4. Focus on defensible technology: Agent swarms are complex, hard to replicate, and solve critical problems. Build something that creates genuine competitive advantage. The fundraising playbook. Armadin's raise teaches FundNaija, Inc. that successful fundraising requires three elements: a credible founder, innovative technology solving a real problem, and a massive addressable market. Whether you're raising $500K or $255M, these principles remain constant. African founders often underestimate their potential. But the global investor community is increasingly looking beyond Silicon Valley. If you're building something that solves real problems for enterprises or consumers at scale, institutional capital is within reach. Want to check your funding readiness? Try FundNaija's free FundScore to assess your startup's investment potential, identify gaps, and get personalized recommendations for your next funding round. Get funding-ready today. Create an AI-powered business plan and discover funding opportunities tailored to your business.
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Industries
Company Size
51-200
Company Stage
Series B
Total Funding
$469.5M
Headquarters
Redwood City, CA
Founded
2025
Find jobs on Simplify and start your career today
Don't see your dream role? Check out thousands of other roles on Simplify.Browse all jobs