Cybersecurity startups VCs just backed
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$150M · sentra.io
Sentra — Secures corporate data as AI agents spread
Sentra raises $150 million in a funding round led by Capital One Ventures to secure corporate data as AI agents proliferate.
CybersecurityKey1 CapitalMunich Re VenturesStandard InvestmentsZeev VenturesBessemer Venture Partners · +2 · +5
$10M · avalonx.ai
AvalonX — Continuous penetration testing for small and midsize firms
AvalonX is an AI security startup that offers continuous, enterprise-grade penetration testing for small and midsize businesses. Their platform leverages proprietary security AI trained on nine years of real-world offensive-security data, combined with human expertise to identify potential vulnerabilities. Designed to provide affordable, continuous testing without the need for a large security budget, AvalonX aims to close the security gap that smaller organizations face.
Artificial intelligenceCybersecurityNetwork securityRidown Capital$10M+ · +2
$100M · solink.com
Solink — Makes existing security cameras searchable in the cloud
Solink's platform provides secure and real-time access to security cameras and business intelligence, helping organizations identify risk and transform the way they operate. Solink's Video Management System (VMS) uses customers' existing security cameras to make them searchable and accessible in the cloud. The market for cloud-managed video surveillance, also known as Video Surveillance as a Service (VSaaS), is expected to grow at 80%1 per year, according to market analyst firm Novaira Insights.
CybersecurityGoldman SachsGolub GrowthComcast VenturesGoldman Sachs AlternativesVertu Capital · +1 · +4
$7M Seed · northstar.security
Northstar Security — Connects security and IT data to find and fix hidden risks
Northstar Security is a cybersecurity company focused on uncovering hidden risks across disconnected security systems by providing a context foundation for agentic security. Their AI platform connects various security and IT data, enabling real-time analysis and autonomous remediation workflows. The company aims to move the industry from merely identifying security problems to continuously fixing them. Founded by experienced professionals, Northstar combines AI technology with insights to enhance security measures.
Information technologyArtificial intelligenceCybersecurityWing Venture Capital$1M+Network security · +3
YC F26 · 0.security
0.security — An autonomous cybersecurity team
The autonomous cybersecurity team
B2BOpen sourceCybersecurityYCEnterpriseDefense · +3
$5M Seed · spartanx.ai
SpartanX Technologies — AI agents that automate full-stack red teaming
SpartanX is a cybersecurity company building an AI-native offensive security platform designed to automate full-stack red teaming. The platform combines 500+ AI agents with coverage across six attack surfaces, exploit validation, and automated remediation to deliver continuous security testing without human bottlenecks. Headquartered in Boston, Massachusetts, its mission is to make autonomous full-stack red teaming accessible to organizations of all sizes.
Artificial intelligenceCybersecurity$1M+
Cybersecurity startups VCs just backed, by email.
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$10M Seed · ultra.security
Ultra Security — Visibility and guardrails for autonomous AI agents
Ultra Security is a company focused on providing an agentic security platform designed for real-time visibility and guardrails, ensuring that autonomous agents can operate securely. The company has recently emerged from stealth mode with $10 million in seed funding. Ultra's technology sits between AI agents and the servers and connectors they utilize.
Artificial intelligenceCybersecurityHidden CapitalEntrée CapitalDetroit Venture PartnersFiredrop · +3 · +6
speedrun SR007 · keythorn.com
Keythorn — Insurance for the AI frontier
Insurance for the AI Frontier
InsurtechCybersecurityAI agentsa16z speedrun · +1
speedrun SR007 · kairo.security
Kairo — Security review and testing for code written by AI agents
Kairo is a continuous security plane for teams shipping code with AI agents: it reviews every pull request for security issues inline and keeps testing the running system, producing a signed report. Three people in San Francisco, founded 2026, in a16z speedrun cohort SR007.
InfrastructureCybersecurityAI models researcha16z speedrun · +1
speedrun SR007 · switchfrog.com
Switchfrog — Turns any web product into an app for AI agents
Turn every web product into an app for agents
CybersecurityAI agentsAI infraa16z speedrun · +1
speedrun SR007 · preman.live
PreMan — Keeps products from breaking under millions of AI agents
Agentic infrastructure that prevents your product from breaking when millions of AI agents use it.
Developer toolsCybersecurityAI infraa16z speedrun · +1
$50M Series B · fortemtech.com
Fortem Technologies — Detects and captures dangerous drones over venues and cities
Fortem Technologies is the leader in airspace awareness, security, and defense for detecting and defeating dangerous drones. Through an advanced, end to end system of distributed radar, AI at the Edge, deep sensor integration, and autonomous drone capture, Fortem monitors and defends the world’s venues, infrastructures, cities, and regions. The same system is accelerating the safety of the world’s airspace for urban air mobility.
ManufacturingCybersecurityAerospaceUnusual MachinesLockheed Martin$50M+ · +3
$7M Seed · remotethreat.com
RemoteThreat — Offensive cyber operations platform for red teams
RemoteThreat is an AI-enabled offensive cyber operations platform company founded by security veterans Chris Thompson and Shawn Jones. The company's O/C/O Platform is a fully integrated, end-to-end commercial solution designed for enterprise red teams, U.S. government mission teams, and vetted defense partners. The platform combines eight connected systems including mission planning, command-and-control infrastructure, implants, and AI-assisted operations while maintaining human control over mission decisions. RemoteThreat's team includes operators, researchers, and engineers with experience from IBM X-Force, Mandiant, SpecterOps, Microsoft, and government organizations.
Information technologySoftwareArtificial intelligence$1M+Cybersecurity · +2
$20.8M Seed · aslanprotects.com
Aslan Protects — AI cyber operatives that map smuggling and fraud networks
Aslan Protects is a defense technology and cyber intelligence startup based in Washington, D.C. Founded in 2025, it develops a specialized cyber defense and intelligence platform using human-supervised, autonomous AI operatives. These operatives are designed to infiltrate hostile digital environments at internet scale, moving beyond static data collection. The platform targets cross-border smuggling, exposes foreign state actors, and maps international cyber-fraud networks.
Information technologySoftwareArtificial intelligenceAlumni VenturesLiquid 2 Ventures2048 Ventures · +6 · +9
$9M Seed · idler.ai
idler — Evaluation suites and RL environments for AI labs
idler is a frontier data research lab and artificial intelligence evaluation platform based in San Francisco, CA. The company develops a comprehensive evaluation and benchmarking platform that builds advanced evaluation suites, programmatic datasets, and interactive reinforcement learning environments utilized by global AI labs. It focuses on specialized software engineering, cybersecurity, recursive self-improvement, and enterprise safety testing beds.
SoftwareArtificial intelligenceCybersecuritySmaiyl MakyshovNur BazylbekovFeross Aboukhadijeh · +9 · +12
$6.5M Seed · synthefy.com
Synthefy — Foundation models for enterprise forecasting and pricing
Synthefy is a foundation-model company that specializes in structured data intelligence, providing solutions that drive the physical and digital economy. Their Structured Data Foundation Models (SDFMs) are designed to generalize across various numerical data, enabling enterprises to solve high-value problems without the need for purpose-built models. By applying machine intelligence to structured numerical data, Synthefy enhances forecasting, pricing optimization, fraud detection, and more. The platform integrates seamlessly with existing data environments used by enterprises.
SoftwareArtificial intelligenceCybersecurityManohar PaluriAparna ChennapragadaSrinivas Narayanan · +10 · +13
$40M Series A · aureliussystems.com
Aurelius Systems — Autonomous laser weapons that take down drones
Aurelius Systems is developing autonomous laser weapons to counter modern drone threats. Based in San Francisco, the company fuses advanced optics, AI-guided tracking, and high-powered directed energy into a compact platform that can eliminate low-cost drones for a fraction of the cost of traditional systems. Aurelius is accelerating the deployment of practical, scalable, and field-ready innovation to restore the technological edge in defense.
ManufacturingInformation technologyCybersecurityDecisive PointDetroit Venture PartnersBravo Victor Venture Capital (Bvvc) · +7 · +10
$36B
Anthropic raises a $36B round
Learn the critical role of AI & ML in cybersecurity and industry specific case studies. Watch on-demand sessions today.
Artificial intelligenceCybersecurityMachine learningBlackstone$100M+ · +2
YC S26 · caution.co
Caution — Hosting for software you don't want to get hacked
Hosting platform for software you don't want to get hacked
CybersecurityCloud computingInfrastructureYCB2B · +2
$200M · spur.us
Spur Intelligence — IP intelligence that detects VPN, proxy and bot traffic
Spur Intelligence delivers the highest-fidelity IP intelligence available to detect anonymized, proxied, or otherwise obscured internet traffic. Their platform empowers organizations to stop fraud, fake users, and threats by providing infrastructure-aware IP intelligence. Designed by expert security researchers and engineers, Spur has elevated VPN attribution, bot detection, and residential proxy tracking. The company's solutions cater to mission-critical government and commercial systems.
CybersecurityInsight Partners$100M+
$36M Series A · aegisai.ai
AegisAI — AI agents that stop phishing, BEC and malware in email
AegisAI is an AI-native Email Security platform. Our AI agents think like human analysts—stopping Zero-day Phishing, BEC, and Malware attacks while cutting false positives by up to 90%.
Information technologyCybersecurityNetwork securityAccelBattery VenturesFoundation Capital · +1 · +4
YC S26 · onecli.sh
OneCLI — An identity gateway for AI agents
The Identity Gateway for AI Agents
B2BCybersecurityOpen sourceInfrastructureArtificial intelligenceYC · +1 · +4
YC S26 · conifer.build
Conifer — Local-first least-cost routing that cuts token spend
Local-first least cost routing system to reduce token spend
B2BCybersecurityArtificial intelligenceYCYC S26 · +2
$35M Seed · arkenstonedefense.com
Arkenstone Defense — Readies tech startups to sell to the federal government
Arkenstone Defense emerged from stealth to provide technology companies with a platform that eliminates the burdens of compliance, security, workforce, and operations needed to sell to the U.S. government. Their comprehensive service allows commercial technology firms to focus on innovation while Arkenstone manages the operational requirements. The company aims to streamline the entry of startups into federal contracting, ensuring they are operationally ready without the lengthy setup process.
Information technologyCybersecurityGovernmentArtis VenturesGranite Hill Capital PartnersJ2 Ventures · +2 · +5
