Startup Database

AI Security Startups 2026 (25 companies)

This page lists all 25 ai security startups in the AIToolGuide 2026 startups database, taken from the 2026 cohort: Y Combinator's four 2026 batches and the TrustMRR and Indie Hackers listings. The biggest intake here is YC Fall 2026 with 9 companies, and 21 of the 25 list a headquarters in USA. Every listing is free and ranked by the data, not by payment. Click any company for its story, founders and facts.

All 25 ai security startups in the 2026 database, newest batch first.
CompanyWhat it doesBatchHQ
Armorer LabsContinuous security verification for AI agents in regulated industriesYC Fall 2026San Francisco, CA, USA
AucertA team of expert AI agents that test mobile apps on their own.YC Fall 2026San Francisco, CA, USA
Hesper AIAI Claims Investigator for InsuranceYC Fall 2026New York City, NY, USA
LatentCatch wrong LLM answers before your customers doYC Fall 2026San Francisco, CA, USA
LyonFoundation models on enterprise transaction data.YC Fall 2026San Francisco, CA, USA
OpenHackAlways-on AI security engineerYC Fall 2026San Francisco, CA, USA
RoutantLast mile deployment and connectivity for Agents as a ServiceYC Fall 2026San Francisco, CA, USA
StacktraceSee and control what your agents actually doYC Fall 2026San Francisco, CA, USA
SynaraBuilding the next generation of AI enabled monitoringYC Fall 2026San Francisco, CA, USA
ConiferLeast cost routing system to reduce 70%+ token spendYC Summer 2026San Francisco, CA, USA
DecaworkTraining company-specific models that approve AI actions.YC Summer 2026San Francisco, CA, USA
FabraixThe world's frontier hacker of AI agents.YC Summer 2026San Francisco, CA, USA
NebuSecAutonomous AI defense system for cyber attackYC Summer 2026San Francisco, CA, USA; Remote
PalisadeAI that finds and fixes OS-level vulnerabilities across device fleetsYC Summer 2026San Francisco, CA, USA
RapidfolioAI-native back-office for banks and fintechsYC Summer 2026San Francisco, CA, USA
TraceforceCrowdStrike for AI AgentsYC Summer 2026San Francisco, CA, USA
TridentAutonomous offensive security agents. The best defense is offenseYC Summer 2026San Francisco, CA, USA
Verdict MachineAI cybersecurity for financial institutions' digital assetsYC Summer 2026Tel Aviv-Yafo, Tel Aviv District, Israel
ClawvisorThe Authorization Layer for AI AgentsYC Spring 2026San Francisco, CA, USA
InthPrivacy and consent infrastructure that ships with your codeYC Spring 2026London, England, United Kingdom
RASPIREAutonomous Runtime SecurityYC Spring 2026Cairo, Cairo Governorate, Egypt
TolmoTolmo is the AI security platform that secures every layer of cloud…YC Spring 2026San Francisco, CA, USA
Agentic FabriqThe control plane for AI agents.YC Winter 2026San Francisco, CA, USA
MouseCatAI to fight financial crimeYC Winter 2026New York City, NY, USA
ParameterAI pentesting, that works!YC Winter 2026San Francisco, CA, USA

Browse the other categories

Vertical AI Startups (149) AI Agent Startups (137) AI DevTools Startups (58) AI Robotics Startups (51) AI Infrastructure Startups (29) AI Voice and Audio Startups (17) AI Vision Startups (10) AI Data Startups (8) More AI Startups (29)

Source: AIToolGuide 2026 startups database (513 AI companies), compiled from Y Combinator 2026 batch listings and the TrustMRR and Indie Hackers marketplaces, November 2026.

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