Startup list · Global
AI security startups
AI security startups ranked by Dealroom Signal. Company information and rankings are refreshed daily.
$3.3Bcombined funding · 50 companies
United Statestop hub
50companies shown
2unicorns
Current Dealroom classifications: AI Security. Company descriptions must also match the topic. Includes operational companies founded from 1990, with no recorded exit and an available Signal score. The highest scores rank first; funding is shown in USD.
Ranked by Dealroom Signal · Updated 2026-10-30 · Source: Dealroom
Related landscape: Security for AI. This list uses current classifications and may differ from the original selection.
| # | Company | Founded | HQ | Signal | Funding |
|---|---|---|---|---|---|
| 1 |
 X
XBOWUnicorn
Automates penetration testing to identify and exploit software vulnerabilities at scale
|
2024 | Seattle, United States | 95.77 | $272M |
| 2 |
 K
KaiFast growing
Agentic AI platform for autonomous cybersecurity operations
|
2025 | San Jose, United States | 95.55 | $125M |
| 3 |
 R
RunlayerFast growing
Enterprise security platform for AI Model Context Protocol
|
2025 | New York City, United States | 94.82 | $41M |
| 4 |
 N
Noma SecurityFast growing
Unified AI and agent security platform for enterprise adoption at scale
|
2023 | Tel Aviv-Yafo, Israel | 94.59 | $132M |
| 5 |
 L
Linx SecurityFast growing
AI-powered identity security and governance platform.
|
2023 | New York City, United States | 94.56 | $89M |
| 6 |
 R
RecoFast growing
Our mission is to Secure Collaboration at the Speed of Business
|
2020 | Tel Aviv-Yafo, Israel | 94.10 | $145M |
| 7 |
 Z
zenityFast growing
AI security and governance platform purpose-built for AI agents
|
2021 | Tel Aviv-Yafo, Israel | 93.82 | $185M |
| 8 |
 G
Geordie AIFast growing
Agent-native security platform for governing autonomous AI
|
2025 | London, United Kingdom | 93.49 | $43M |
| 9 |
 L
LegionFast growing
Browser-native AI SOC platform automating analyst workflows
|
2024 | New York City, United States | 93.40 | $38M |
| 10 |
 E
Eve SecurityFast growing
Runtime security and Agent-in-the-Loop governance for enterprise AI agents
|
2025 | Austin, United States | 93.37 | $8M |
| 11 |
 G
Gray Swan AIFast growing
Providing enterprise security solutions to protect AI models from risks, attacks, and misuse
|
2023 | Pittsburgh, United States | 93.24 | $40M |
| 12 |
 A
Alice
Enterprise AI security, safety and trust for models, agents and applications
|
2018 | Tel Aviv-Yafo, Israel | 93.21 | $240M |
| 13 |
 D
depthfirstFast growing
AI-native security platform for code vulnerability remediation
|
2024 | San Francisco, United States | 93.15 | $141M |
| 14 |
 E
EntFast growing
Intent-aware workspace security preventing real-time threats.
|
2025 | San Francisco, United States | 93.12 | $100M |
| 15 |
 O
Orion SecurtiyFast growing
Offering AI-powered observability solutions for data security
|
2024 | Tel Aviv-Yafo, Israel | 92.95 | $44M |
| 16 |
 I
InferactFast growing
Open-source inference engine for scaling AI models cheaper and faster
|
2025 | San Francisco, United States | 92.86 | $150M |
| 17 |
 S
StraikerFast growing
Agentic security that discovers, tests and protects enterprise AI agents
|
2024 | Dover, United States | 92.69 | $85M |
| 18 |
 S
Sycamore LabsFast growing
Trusted agent operating system for enterprise AI
|
2025 | Palo Alto, United States | 92.36 | $65M |
| 19 |
 T
TeleskopeFast growing
Teleskope automates data security, privacy, and compliance for businesses with data classification and redaction services
|
2022 | New York City, United States | 92.22 | $39M |
| 20 |
 M
MindgardFast growing
Automated security testing and red teaming for AI systems
|
2022 | London, United Kingdom | 92.15 | $42M |
| 21 |
 N
Nightfall AI$25M+ revenue
Nightfall identifies business-critical data across SaaS, APIs, and data infrastructure so it can be managed and protected
|
2018 | San Francisco, United States | 91.47 | $60M |
| 22 |
 N
NeuralTrustFast growing
Security and governance platform for enterprise AI agents
|
2022 | Barcelona, Spain | 91.35 | $22M |
| 23 |
 H
Helmet SecurityFast growing
End-to-end security for agentic AI communications infrastructure
|
2025 | Washington DC, United States | 91.28 | $9M |
| 24 |
 N
NoveeFast growing
AI-powered continuous penetration testing and vulnerability remediation
|
2025 | Tel Aviv-Yafo, Israel | 91.23 | $52M |
| 25 |
 J
JetStream SecurityFast growing
AI governance platform providing visibility and control
|
2025 | Santa Clara, United States | 91.22 | $34M |
| 26 |
 C
CraniumFast growing
Cranium provides AI security solutions for organizations, addressing visibility, security, and governance risks and extending support to the Azure OpenAI Service
|
2023 | Millburn, United States | 91.18 | $32M |
| 27 |
 A
AppSecAIFast growingDealroom profile unavailable
AI-powered automation for application security and vulnerability remediation
|
2023 | Los Altos, United States | 91.14 | $400K |
| 28 |
 T
TreelineFast growing
Modern IT operating system for automated corporate infrastructure
|
2025 | San Francisco, United States | 90.98 | $25M |
| 29 |
 R
Rein SecurityFast growing
Runtime application security with real-time production visibility.
|
2024 | New York City, United States | 90.63 | $33M |
| 30 |
 P
Pramaana LabsFast growing
Verification compiler for mission-critical AI
|
2025 | Palo Alto, United States | 90.57 | $27M |
| 31 |
 M
Mate SecurityFast growing
AI SOC agent that learns your organization in hours, captures tribal knowledge, and becomes smarter with every investigation. Defense that compounds.
|
2025 | Herzliya, Israel | 90.51 | $51M |
| 32 |
 K
Keycard LabsFast growing
Integration layer for AI agents and global identity network, enhancing machine identity and access control for AI workloads
|
2025 | Cole Harbour, Canada | 90.20 | $38M |
| 33 |
 T
TolmoFast growing
AI security agents for production environments.
|
2026 | San Francisco, United States | 90.04 | $22M |
| 34 |
 R
RuntaFast growing
Infrastructure for enterprise AI agent supervision and security.
|
2025 | San Francisco, United States | 89.72 | $20M |
| 35 |
 A
AIR SecurityFast growingDealroom profile unavailable
Context firewall that continuously vets skills and add-ons for AI agents
|
2026 | New York City, United States | 89.58 | $50M |
| 36 |
 B
Backslash SecurityFast growing
Application security platform for AI-native software development.
|
2022 | Tel Aviv-Yafo, Israel | 89.52 | $27M |
| 37 |
 O
Opti AIFast growing
AI-native identity security platform for enterprises
|
2023 | Israel | 89.50 | $35M |
| 38 |
 N
NewCoreFast growing
Security-first identity platform for humans, machines and AI agents
|
2026 | Tel Aviv-Yafo, Israel | 89.43 | $66M |
| 39 |
 K
KonaSense
AI security platform for governing employee interactions
|
2025 | Tampa, United States | 89.42 | — |
| 40 |
 P
Pluto SecurityFast growingDealroom profile unavailable
Agentless security platform for enterprise AI adoption.
|
2025 | Israel, United States | 89.39 | $34M |
| 41 |
 P
PiFast growingDealroom profile unavailable
Agentic AI platform for automated vulnerability remediation.
|
2025 | San Francisco, United States | 89.11 | $35M |
| 42 |
 C
ConductorAIFast growing
Conductor AI is your AI Compliance Platform
|
2023 | Biddeford, United States | 88.50 | $15M |
| 43 |
 S
Sondera
AI agent monitoring and security policy enforcement
|
2025 | — | 88.42 | — |
| 44 |
 A
ArmadinUnicorn
AI-native cybersecurity platform for eliminating exploitable risk
|
2025 | Redwood City, United States | 88.40 | $470M |
| 45 |
 A
AttestableFast growing
AI trust-layer technology ensuring system integrity.
|
2025 | Tel Aviv-Yafo, Israel | 88.25 | $20M |
| 46 |
 V
VesenceFast growingDealroom profile unavailable
AI-driven legal document management ensuring firm-wide compliance with robust security and data residency controls
|
2025 | Stockholms kommun, Sweden | 88.16 | $9M |
| 47 |
 N
NativeFast growing
Unified control plane for multi-cloud security enforcement
|
2024 | Seattle, United States | 87.67 | $42M |
| 48 |
 O
Onit SecurityFast growing
AI-powered agentic exposure management and vulnerability remediation.
|
2025 | Israel | 87.54 | $11M |
| 49 |
 L
Lumia SecurityFast growing
AI security and governance platform for enterprises
|
2025 | New York City, United States | 87.53 | $18M |
| 50 |
 M
Manifold SecurityFast growing
AI detection and response for agentic endpoints.
|
2025 | United States | 87.23 | $8M |
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